diff --git a/liquidsoap/templates/aircox/liquidsoap/controller.html b/liquidsoap/templates/aircox/liquidsoap/controller.html
index 4a46241..518305e 100644
--- a/liquidsoap/templates/aircox/liquidsoap/controller.html
+++ b/liquidsoap/templates/aircox/liquidsoap/controller.html
@@ -106,15 +106,15 @@
                 </header>
                 <div class="sources">
                     {% with source=controller.master %}
-                    {% include 'aircox_liquidsoap/source.html' %}
+                    {% include 'aircox/liquidsoap/source.html' %}
                     {% endwith %}
 
                     {% with source=controller.dealer %}
-                    {% include 'aircox_liquidsoap/source.html' %}
+                    {% include 'aircox/liquidsoap/source.html' %}
                     {% endwith %}
 
                     {% for source in controller.streams.values %}
-                    {% include 'aircox_liquidsoap/source.html' %}
+                    {% include 'aircox/liquidsoap/source.html' %}
                     {% endfor %}
                 </div>
                 <div class="next">
diff --git a/liquidsoap/templates/aircox/liquidsoap/station.liq b/liquidsoap/templates/aircox/liquidsoap/station.liq
index 3456456..3f52214 100644
--- a/liquidsoap/templates/aircox/liquidsoap/station.liq
+++ b/liquidsoap/templates/aircox/liquidsoap/station.liq
@@ -4,7 +4,8 @@
 def interactive_source (id, s) = \
     def handler(m) = \
         file = string.escape(m['filename']) \
-        system('{{ log_script }} -s "#{id}" -p "#{file}" -c "liquidsoap: play" &') \
+        system('echo {{ log_script }} -s "#{id}" -p \"#{file}\" -c "liquidsoap: play" &') \
+        system('{{ log_script }} -s "#{id}" -p \"#{file}\" -c "liquidsoap: play" &') \
     end \
     \
     s = on_track(id=id, handler, s)
@@ -65,7 +66,7 @@ set("{{ key|safe }}", {{ value|safe }}) \
         {% if controller.station.fallback %}
             single("{{ controller.station.fallback }}"), \
         {% else %}
-            blank(), \
+            blank(duration=0.1), \
         {% endif %}
     ]) \
 ) \
diff --git a/liquidsoap/utils.py b/liquidsoap/utils.py
index e97710f..00b5ebf 100644
--- a/liquidsoap/utils.py
+++ b/liquidsoap/utils.py
@@ -173,7 +173,7 @@ class Source:
 
     def stream_info (self):
         """
-        Return a dict with info related to the program's stream
+        Return a dict with info related to the program's stream.
         """
         if not self.program:
             return
@@ -279,6 +279,38 @@ class Dealer (Source):
             if diffusion.playlist and on_air not in diffusion.playlist:
                 return diffusion
 
+    def monitor (self):
+        """
+        Monitor playlist (if it is time to load) and if it time to trigger
+        the button to start a diffusion.
+        """
+        playlist = self.playlist
+        on_air = self.current_sound
+        now = tz.make_aware(tz.datetime.now())
+
+        diff = self.__get_next(now, on_air)
+        if not diff:
+            return # there is nothing we can do
+
+        # playlist reload
+        if self.playlist != diff.playlist:
+            if not playlist or on_air == playlist[-1] or \
+                on_air not in playlist:
+                self.on = False
+                self.playlist = diff.playlist
+
+        # run the diff
+        if self.playlist == diff.playlist and diff.date <= now and not self.on:
+            self.on = True
+            for source in self.controller.streams.values():
+                source.skip()
+            self.controller.log(
+                source = self.id,
+                date = now,
+                comment = 'trigger the scheduled diffusion to liquidsoap; '
+                          'skip all other streams',
+                related_object = diff,
+            )
 
 class Controller:
     """
@@ -385,7 +417,6 @@ class Controller:
         """
         if not self.connector.available and self.connector.open():
             return
-
         self.dealer.monitor()
 
 
diff --git a/programs/admin.py b/programs/admin.py
index 5b374c3..f47d3fc 100755
--- a/programs/admin.py
+++ b/programs/admin.py
@@ -3,6 +3,7 @@ import copy
 from django import forms
 from django.contrib import admin
 from django.db import models
+from django.utils.translation import ugettext as _, ugettext_lazy
 
 from aircox.programs.models import *
 
@@ -64,6 +65,12 @@ class StationAdmin (NameableAdmin):
 
 @admin.register(Program)
 class ProgramAdmin (NameableAdmin):
+    def schedule (self, obj):
+        return Schedule.objects.filter(program = obj).count() > 0
+    schedule.boolean = True
+    schedule.short_description = _("Schedule")
+
+    list_display = ('id', 'name', 'active', 'schedule')
     fields = NameableAdmin.fields + [ 'station', 'active' ]
     # TODO list_display
     inlines = [ ScheduleInline, StreamInline ]
@@ -92,7 +99,7 @@ class DiffusionAdmin (admin.ModelAdmin):
     list_filter = ('type', 'date', 'program')
     list_editable = ('type', 'date')
 
-    fields = ['type', 'date', 'initial', 'program', 'sounds']
+    fields = ['type', 'date', 'duration', 'initial', 'program', 'sounds']
 
     def get_form(self, request, obj=None, **kwargs):
         if request.user.has_perm('aircox_program.programming'):
@@ -118,6 +125,24 @@ class LogAdmin (admin.ModelAdmin):
     list_display = ['id', 'date', 'source', 'comment', 'related_object']
     list_filter = ['date', 'related_type']
 
-admin.site.register(Track)
-admin.site.register(Schedule)
+
+@admin.register(Schedule)
+class ScheduleAdmin (admin.ModelAdmin):
+    def program_name (self, obj):
+        return obj.program.name
+    program_name.short_description = _('Program')
+
+    def day (self, obj):
+        return obj.date.strftime('%A')
+    day.short_description = _('Day')
+
+    def rerun (self, obj):
+        return obj.initial != None
+    rerun.short_description = _('Rerun')
+    rerun.boolean = True
+
+    list_display = ['id', 'program_name', 'frequency', 'date', 'day', 'rerun']
+    list_editable = ['frequency', 'date']
+
+admin.site.register(Track)
 
diff --git a/programs/management/commands/diffusions_monitor.py b/programs/management/commands/diffusions_monitor.py
index 70d60ab..39da99c 100644
--- a/programs/management/commands/diffusions_monitor.py
+++ b/programs/management/commands/diffusions_monitor.py
@@ -23,7 +23,7 @@ from django.utils import timezone as tz
 
 from aircox.programs.models import *
 
-logger = logging.getLogger('aircox.programs.' + __name__)
+logger = logging.getLogger('aircox.tools')
 
 class Actions:
     @staticmethod
@@ -33,19 +33,28 @@ class Actions:
         items if they have been generated during this
         update.
 
+        It set an attribute 'do_not_save' if the item should not
+        be saved. FIXME: find proper way
+
         Return the number of conflicts
         """
         conflicts = item.get_conflicts()
+        for i, conflict in enumerate(conflicts):
+            if conflict.program == item.program:
+                item.do_not_save = True
+                del conflicts[i]
+                continue
+
+            if conflict.pk in saved_items and \
+                    conflict.type != Diffusion.Type['unconfirmed']:
+                conflict.type = Diffusion.Type['unconfirmed']
+                conflict.save()
+
         if not conflicts:
             item.type = Diffusion.Type['normal']
             return 0
 
         item.type = Diffusion.Type['unconfirmed']
-        for conflict in conflicts:
-            if conflict.pk in saved_items and \
-                    conflict.type != Diffusion.Type['unconfirmed']:
-                conflict.type = Diffusion.Type['unconfirmed']
-                conflict.save()
         return len(conflicts)
 
     @classmethod
@@ -67,14 +76,18 @@ class Actions:
             else:
                 for item in items:
                     count[1] += cl.__check_conflicts(item, saved_items)
+                    if hasattr(item, 'do_not_save'):
+                        count[0] -= 1
+                        continue
+
                     item.save()
                     saved_items.add(item)
 
-            logger.info('[update] {} new diffusions for schedule #{} ({})'.format(
-                    len(items), schedule.id, str(schedule)
-                 ))
+            logger.info('[update] schedule %s: %d new diffusions',
+                    str(schedule), len(items),
+                 )
 
-        logger.info('[update] total of {} diffusions have been created,'.format(count[0]),
+        logger.info('[update] %d diffusions have been created, %s', count[0],
               'do not forget manual approval' if manual else
                 '{} conflicts found'.format(count[1]))
 
@@ -82,7 +95,7 @@ class Actions:
     def clean (date):
         qs = Diffusion.objects.filter(type = Diffusion.Type['unconfirmed'],
                                       date__lt = date)
-        logger.info('[clean] {} diffusions will be removed'.format(qs.count()))
+        logger.info('[clean] %d diffusions will be removed', qs.count())
         qs.delete()
 
     @staticmethod
@@ -98,7 +111,7 @@ class Actions:
             else:
                 items.append(diffusion.id)
 
-        logger.info('[check] {} diffusions will be removed'.format(len(items)))
+        logger.info('[check] %d diffusions will be removed', len(items))
         if len(items):
             Diffusion.objects.filter(id__in = items).delete()
 
diff --git a/programs/management/commands/sounds_monitor.py b/programs/management/commands/sounds_monitor.py
index 2074e4d..e239f24 100644
--- a/programs/management/commands/sounds_monitor.py
+++ b/programs/management/commands/sounds_monitor.py
@@ -33,16 +33,17 @@ from aircox.programs.models import *
 import aircox.programs.settings as settings
 import aircox.programs.utils as utils
 
-logger = logging.getLogger('aircox.programs.' + __name__)
+logger = logging.getLogger('aircox.tools')
 
 class Command (BaseCommand):
     help= __doc__
 
     def report (self, program = None, component = None, *content):
         if not component:
-            logger.info('{}: '.format(program), *content)
+            logger.info('%s: %s', str(program), ' '.join([str(c) for c in content]))
         else:
-            logger.info('{}, {}: '.format(program, component), *content)
+            logger.info('%s, %s: %s', str(program), str(component),
+                        ' '.join([str(c) for c in content]))
 
     def add_arguments (self, parser):
         parser.formatter_class=RawTextHelpFormatter
@@ -70,7 +71,7 @@ class Command (BaseCommand):
         if not err:
             return utils.seconds_to_time(int(float(out)))
 
-    def get_sound_info (self, program, path):
+    def _get_sound_info (self, program, path):
         """
         Parse file name to get info on the assumption it has the correct
         format (given in Command.help)
@@ -92,7 +93,6 @@ class Command (BaseCommand):
         else:
             r = r.groupdict()
 
-        r['duration'] = self._get_duration(path)
         r['name'] = r['name'].replace('_', ' ').capitalize()
         r['path'] = path
         return r
@@ -132,11 +132,11 @@ class Command (BaseCommand):
         """
         For all programs, scan dirs
         """
-        logger.info('scan files for all programs...')
+        logger.info('scan all programs...')
         programs = Program.objects.filter()
 
         for program in programs:
-            logger.info('program', program.name)
+            logger.info('#%d %s', program.id, program.name)
             self.scan_for_program(
                 program, settings.AIRCOX_SOUND_ARCHIVES_SUBDIR,
                 type = Sound.Type['archive'],
@@ -151,7 +151,7 @@ class Command (BaseCommand):
         Scan a given directory that is associated to the given program, and
         update sounds information.
         """
-        logger.info('scan files in', subdir)
+        logger.info('- %s/', subdir)
         if not program.ensure_dir(subdir):
             return
 
@@ -163,14 +163,17 @@ class Command (BaseCommand):
             if not path.endswith(settings.AIRCOX_SOUND_FILE_EXT):
                 continue
 
-            sound_info = self.get_sound_info(program, path)
-            sound = Sound.objects.get_or_create(
+            sound, created = Sound.objects.get_or_create(
                 path = path,
-                defaults = { 'name': sound_info['name'],
-                             'duration': sound_info['duration'] or None }
-            )[0]
-            sound.__dict__.update(sound_kwargs)
-            sound.save(check = False)
+                defaults = sound_kwargs,
+            )
+
+            sound_info = self._get_sound_info(program, path)
+
+            if created or sound.check_on_file():
+                sound_info['duration'] = self._get_duration()
+                sound.__dict__.update(sound_info)
+                sound.save(check = False)
 
             # initial diffusion association
             if 'year' in sound_info:
@@ -181,12 +184,12 @@ class Command (BaseCommand):
                         self.report(program, path,
                                     'the diffusion must be an initial diffusion')
                     else:
-                        sound = initial.sounds.get_queryset() \
-                                    .filter(path == sound.path)
-                        if not sound:
+                        sound_ = initial.sounds.get_queryset() \
+                                    .filter(path = sound.path)
+                        if not sound_:
                             self.report(program, path,
                                         'add sound to diffusion ', initial.id)
-                            initial.sounds.add(sound)
+                            initial.sounds.add(sound.pk)
                             initial.save()
 
         self.check_sounds(Sound.objects.filter(path__startswith = subdir))
@@ -201,16 +204,18 @@ class Command (BaseCommand):
         sounds = Sound.objects.filter(good_quality = False)
         if check:
             self.check_sounds(sounds)
-            files = [ sound.path for sound in sounds if not sound.removed ]
+            files = [ sound.path for sound in sounds
+                        if not sound.removed and os.path.exists(sound.path) ]
         else:
-            files = [ sound.path for sound in sounds.filter(removed = False) ]
+            files = [ sound.path for sound in sounds.filter(removed = False)
+                        if os.path.exists(sound.path) ]
 
-        logger.info('start quality check...')
+        logger.info('quality check...',)
         cmd = quality_check.Command()
         cmd.handle( files = files,
                     **settings.AIRCOX_SOUND_QUALITY )
 
-        logger.info('update sounds in database')
+        logger.info('update database')
         def update_stats(sound_info, sound):
             stats = sound_info.get_file_stats()
             if stats:
diff --git a/programs/management/commands/sounds_quality_check.py b/programs/management/commands/sounds_quality_check.py
index 2922e67..846a51c 100644
--- a/programs/management/commands/sounds_quality_check.py
+++ b/programs/management/commands/sounds_quality_check.py
@@ -9,7 +9,7 @@ from argparse import RawTextHelpFormatter
 
 from django.core.management.base import BaseCommand, CommandError
 
-logger = logging.getLogger('aircox.programs.' + __name__)
+logger = logging.getLogger('aircox.tools')
 
 class Stats:
     attributes = [
@@ -104,11 +104,11 @@ class Sound:
         ]
 
         if self.good:
-            logger.info(self.path, ': good samples:\033[92m',
-                        ', '.join( view(self.good) ), '\033[0m')
+            logger.info(self.path + ': good samples:\033[92m%s\033[0m',
+                        ', '.join(view(self.good)))
         if self.bad:
-            loggeer.info(self.path ': bad samples:\033[91m',
-                         ', '.join( view(self.bad) ), '\033[0m')
+            logger.info(self.path + ': good samples:\033[91m%s\033[0m',
+                        ', '.join(view(self.bad)))
 
 class Command (BaseCommand):
     help = __doc__
@@ -157,7 +157,7 @@ class Command (BaseCommand):
         self.bad = []
         self.good = []
         for sound in self.sounds:
-            logger.info('analyse ', sound.path)
+            logger.info('analyse ' + sound.path)
             sound.analyse()
             sound.check(attr, minmax[0], minmax[1])
             if sound.bad:
@@ -167,13 +167,8 @@ class Command (BaseCommand):
 
         # resume
         if options.get('resume'):
-            if self.good:
-                logger.info('files that did not failed the test:\033[92m\n   ',
-                      '\n    '.join([sound.path for sound in self.good]),
-                      '\033[0m')
-            if self.bad:
-                # bad at the end for ergonomy
-                logger.info('files that failed the test:\033[91m\n   ',
-                      '\n    '.join([sound.path for sound in self.bad]),
-                      '\033[0m')
+            for sound in self.good:
+                logger.info('\033[92m+ %s\033[0m', sound.path)
+            for sound in self.bad:
+                logger.info('\033[91m+ %s\033[0m', sound.path)
 
diff --git a/programs/models.py b/programs/models.py
index c10308d..9a8859c 100755
--- a/programs/models.py
+++ b/programs/models.py
@@ -16,7 +16,7 @@ import aircox.programs.utils as utils
 import aircox.programs.settings as settings
 
 
-logger = logging.getLogger(__name__)
+logger = logging.getLogger('aircox.core')
 
 
 def date_or_default (date, date_only = False):
@@ -171,7 +171,7 @@ class Sound (Nameable):
         if not self.file_exists():
             if self.removed:
                 return
-            logger.info('sound file {} has been removed'.format(self.path))
+            logger.info('sound %s: has been removed', self.path)
             self.removed = True
             return True
 
@@ -182,8 +182,8 @@ class Sound (Nameable):
         if self.mtime != mtime:
             self.mtime = mtime
             self.good_quality = False
-            logger.info('sound file {} m_time has changed. Reset quality info'
-                        .format(self.path))
+            logger.info('sound %s: m_time has changed. Reset quality info',
+                        self.path)
             return True
         return old_removed != self.removed
 
@@ -255,7 +255,7 @@ class Schedule (models.Model):
         'last':             (0b010000, _('last week of the month')),
         'first and third':  (0b000101, _('first and third weeks of the month')),
         'second and fourth': (0b001010, _('second and fourth weeks of the month')),
-        'every':            (0b011111, _('once a week')),
+        'every':            (0b011111, _('every week')),
         'one on two':       (0b100000, _('one week on two')),
     }
     VerboseFrequency = { value[0]: value[1] for key, value in Frequency.items() }
@@ -323,40 +323,42 @@ class Schedule (models.Model):
         Return a list with all matching dates of date.month (=today)
         """
         date = date_or_default(date, True).replace(day=1)
-        fwday = date.weekday()
-        wday = self.date.weekday()
+        freq = self.frequency
 
-        # move date to the date weekday of the schedule
+        # move to the first day of the month that matches the schedule's weekday
         # check on SO#3284452 for the formula
-        date += tz.timedelta(days = (7 if fwday > wday else 0) - fwday + wday)
-        fwday = date.weekday()
+        first_weekday = date.weekday()
+        sched_weekday = self.date.weekday()
+        date += tz.timedelta(days = (7 if first_weekday > sched_weekday else 0) \
+                                    - first_weekday + sched_weekday)
+        month = date.month
 
-        # special frequency case
-        weeks = self.frequency
-        if self.frequency == Schedule.Frequency['last']:
-            date += tz.timedelta(month = 1, days = -7)
-            return self.normalize([date])
-        if weeks == Schedule.Frequency['one on two']:
-            # if both week are the same, then the date week of the month
-            # matches. Note: wday % 2 + fwday % 2 => (wday + fwday) % 2
-            fweek = date.isocalendar()[1]
-
-            if date.month == 1 and fweek >= 50:
-                # isocalendar can think we are on the last week of the
-                # previous year
-                fweek = 0
-            week = self.date.isocalendar()[1]
-            weeks = 0b010101 if not (fweek + week) % 2 else 0b001010
+        # last of the month
+        if freq == Schedule.Frequency['last']:
+            date += tz.timedelta(days = 4 * 7)
+            next_date = date + tz.timedelta(days = 7)
+            if next_date.month == month:
+                date = next_date
+            return [self.normalize(date)]
 
         dates = []
-        for week in range(0,5):
-            # there can be five weeks in a month
-            if not weeks & (0b1 << week):
-                continue
-            wdate = date + tz.timedelta(days = week * 7)
-            if wdate.month == date.month:
-                dates.append(self.normalize(wdate))
-        return dates
+        if freq == Schedule.Frequency['one on two']:
+            # NOTE previous algorithm was based on the week number, but this
+            # approach is wrong because number of weeks in a year can be
+            # 52 or 53. This also clashes with the first week of the year.
+            if not (date - self.date).days % 14:
+                date += tz.timedelta(days = 7)
+
+            while date.month == month:
+                dates.append(date)
+                date += tz.timedelta(days = 14)
+        else:
+            week = 0
+            while week < 5 and date.month == month:
+                if freq & (0b1 << week):
+                    dates.append(date)
+                date += tz.timedelta(days = 7)
+        return [self.normalize(date) for date in dates]
 
     def diffusions_of_month (self, date, exclude_saved = False):
         """
@@ -397,9 +399,16 @@ class Schedule (models.Model):
         return diffusions
 
     def __str__ (self):
-        frequency = [ x for x,y in Schedule.Frequency.items()
-                        if y == self.frequency ]
-        return self.program.name + ': ' + frequency[0] + ' (' + str(self.date) + ')'
+        return ' | '.join([ '#' + str(self.id), self.program.name,
+                            self.get_frequency_display(),
+                            self.date.strftime('%a %H:%M') ])
+
+    def save (self, *args, **kwargs):
+        if self.initial:
+            self.program = self.initial.program
+            self.duration = self.initial.duration
+            self.frequency = self.initial.frequency
+        super().save(*args, **kwargs)
 
     class Meta:
         verbose_name = _('Schedule')
@@ -489,16 +498,24 @@ class Program (Nameable):
 
     def __init__ (self, *kargs, **kwargs):
         super().__init__(*kargs, **kwargs)
-        self.__original_path = self.path
+        if self.name:
+            self.__original_path = self.path
 
     def save (self, *kargs, **kwargs):
-        super().__init__(*kargs, **kwargs)
-        if self.__original_path != self.path and \
+        super().save(*kargs, **kwargs)
+        if hasattr(self, '__original_path') and \
+                self.__original_path != self.path and \
+                os.path.exists(self.__original_path) and \
                 not os.path.exists(self.path):
-            logger.info('program {} name changed to {}. Change dir name' \
-                        .format(self.id, self.name))
+            logger.info('program #%s\'s name changed to %s. Change dir name',
+                        self.id, self.name)
             shutil.move(self.__original_path, self.path)
 
+            sounds = Sounds.objects.filter(path__startswith = self.__original_path)
+            for sound in sounds:
+                sound.path.replace(self.__original_path, self.path)
+                sound.save()
+
 class Diffusion (models.Model):
     """
     A Diffusion is an occurrence of a Program that is scheduled on the
@@ -624,7 +641,7 @@ class Diffusion (models.Model):
             if diff.pk == self.pk:
                 continue
 
-            if diff.date < end:
+            if diff.date < end and diff not in r:
                 r.append(diff)
                 continue
             count+=1
@@ -637,10 +654,10 @@ class Diffusion (models.Model):
             if self.initial.initial:
                 self.initial = self.initial.initial
             self.program = self.initial.program
-        super(Diffusion, self).save(*args, **kwargs)
+        super().save(*args, **kwargs)
 
     def __str__ (self):
-        return self.program.name + ', ' + \
+        return '#' + str(self.pk) + ' ' + self.program.name + ', ' + \
                 self.date.strftime('%Y-%m-%d %H:%M') +\
                 '' # FIXME str(self.type_display)
 
@@ -691,15 +708,15 @@ class Log (models.Model):
                                     ContentType.objects.get_for_model(model).id)
 
     def print (self):
-        logger.info('log #{} ({}): {}{}'.format(
+        logger.info('log #%s: %s%s',
             str(self),
             self.comment or '',
             '\n - {}: #{}'.format(self.related_type, self.related_id)
                 if self.related_object else ''
-        ))
+        )
 
     def __str__ (self):
-        return 'log #{} ({}, {})'.format(
+        return '#{} ({}, {})'.format(
                 self.id, self.date.strftime('%Y-%m-%d %H:%M'), self.source
         )