[MPlayer-users] Can't enable surround sound

[Fabrice Delente]

Hello.

I have a Soundblaster Audigy SE - which is a 7.1 card - as my 3rd soundcard.

This card works perfectly in stereo mode; I can play stereo files on my
front or rear speakers:

mplayer some.mp3 -ao alsa:device=plughw=2.1

gives me sound on both my rear speakers, while

mplayer some.mp3 -ao alsa:device=plughw=2.0

would play the file on the front speakers.

However, when I want to listen to a 5.1 dvd in surround mode, nothing comes
out from the rear speakers. I have tried

mplayer dvd://1 -channels 4 -ao alsa:device=plughw=2

and mplayer tells me

AUDIO: 48000 Hz, 4 ch, s16le, 384.0 kbit/12.50% (ratio: 48000->384000)
Selected audio codec: [a52] afm: liba52 (AC3-liba52)
==========================================================================
AO: [alsa] 48000Hz 4ch s16le (2 bytes per sample)
Starting playback...

but I get sound only on the front speakers.

Any clue?

Thanks.

_________________________________________________________________
Les révélations de la starac 6 commentées par Jérémy! 
http://starac2006.spaces.live.com/