This doesn't work too. It is a Alsa problem. If a program holds alsa, alsa do 
not switch back from ac3 to pcm. If the program release the alsa, alsa make the 
switch. I have build an workaround... 
-------- Original-Nachricht --------
> Datum: Tue, 10 Nov 2009 15:12:03 +0000
> Von: bret clark <bac...@hotmail.com>
> An: freevo-users@lists.sourceforge.net
> Betreff: Re: [Freevo-users] mplayer  ac3 sound over s/pdif

> 
> I had suggest the following in another email. Please add the following
> line to your local_conf.py
> 
> MPLAYER_AO_DEV_OPTS = ' -ac hwac3,hwdts,a52,'
> 
> > Date: Tue, 10 Nov 2009 10:08:42 +0100
> > From: muell...@gmx.de
> > To: freevo-users@lists.sourceforge.net
> > Subject: Re: [Freevo-users] mplayer  ac3 sound over s/pdif
> > 
> > P.s. my values in local_conf.py are:local_conf.py?
> > MPLAYER_AO_DEV = 'alsa'   
> > MPLAYER_AO_DEV_OPTS = '' 
> > if CONF.display == 'x11':
> >     MPLAYER_VO_DEV = 'xv,sdl,x11,' # X11 drivers in order of preference
> > else:
> >     MPLAYER_VO_DEV = CONF.display  # e.g.: x11,mga,fbdev, see mplayer
> docs
> > 
> > MPLAYER_VO_DEV_OPTS = ''           # e.g.: 'some_var=vcal'
> > 
> > MPLAYER_AUDIO_CACHE_KB = 256
> > MPLAYER_AUDIO_CACHE_MIN_PERCENT = 25
> > MPLAYER_AUDIO_NETWORK_OPTS = '-cache %d -cache-min %d' %
> (MPLAYER_AUDIO_CACHE_KB, MPLAYER_AUDIO_CACHE_MIN_PERCENT)
> > MPLAYER_NICE = -20
> > 
> > if CONF.display in ( 'directfb', 'dfbmga' ):
> >     MPLAYER_ARGS_DEF = ('-autosync 100 -nojoystick -autoq 100 -fs ')
> > else:
> >     MPLAYER_ARGS_DEF = (('-autosync 100 -nojoystick -autoq 100 -screenw
> %s '
> >                        + '-screenh %s -fs') % (CONF.width, CONF.height))
> > 
> >   
> > 
> > 
> >        
> > -------- Original-Nachricht --------
> > > Datum: Mon, 09 Nov 2009 10:31:06 -0500
> > > Von: Jason Tackaberry <t...@urandom.ca>
> > > An: freevo-users@lists.sourceforge.net
> > > Betreff: Re: [Freevo-users] mplayer  ac3 sound over s/pdif
> > 
> > >      1. On Mon, 2009-11-09 at 12:05 +0100, "Michael Müller" wrote:
> > > > I detected that I don't have to reboot the whole system, I only have
> > > > to restart freevo. I think freevo holds in some way the sound dev
> > > > because if I use mplayer from console all works fine.
> > > 
> > > I'm a bit unclear about that last part.  Are you saying that as long
> as
> > > you run MPlayer from the console, it always works regardless of
> whether
> > > Freevo is running or not?  i.e. even if you are having audio problems
> > > when launching the video via Freevo, it always works when running from
> > > the command line (even if Freevo is still running)?
> > > 
> > > What is the MPLAYER_AO_DEV_OPTS value set to in your local_conf.py?
> > > 
> > > Now that I reread your initial email, you seem to give two
> contradictory
> > > reports.  First you give this sequence of events:
> > >      1. Play AC3 passthrough; works.
> > >      2. Play PCM; works.
> > >      3. Play AC3 passthrough; works.
> > >      4. Play PCM; doesn't work.
> > > 
> > > Then you say "After a restart I can play again movies without ac3
> > > support till I start an ac3 movie" which implies this sequence of
> events
> > > instead:
> > >      1. Play PCM; works.
> > >      2. Play AC3 passthrough; works.
> > >      3. Play PCM; doesn't work.
> > > 
> > > In the first case, PCM works for a time after AC3 passthrough.  In the
> > > second, AC3 passthrough seems to kill your ability to play PCM.  Can
> you
> > > please clarify what you're actually experiencing?
> > > 
> > > Cheers,
> > > Jason.
> > > 
> > > 
> > >
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