[MPlayer-users] USB Audio not working in Gutsy?

[Vladimir Mosgalin]

Hi Steven Adeff!

 On 2007.12.21 at 17:29:02 -0500, Steven Adeff wrote next:

> I just got an M-Audio Audiophile USB here are the errors i get when i
> try and play audio. I've got it setup so that digital output should
> work fine as well
> 
> $ mplayer -ao alsa:device=hw=2,0 The\ Surfers\ -\ Songs\ from\ the\

Don't use hw device, period. Either use plughw and let alsa convert
formats for you, or specify exact format supported by card manually in
each app - but that's PITA and not possible at all for some applications
(probably including mplayer), or, better yet, use sound server.

> $ mplayer -ao alsa:device=hw=2,0 -ac hwdts Pink\ Floyd\ -\ Echoes\ -\
> The\ Best\ Of\ Pink\ Floyd\ \(CD\ 1\).wav

...

> Forced audio codec: hwdts
> Opening audio decoder: [hwac3] AC3/DTS pass-through S/PDIF
> No accelerated IMDCT transform found
> hwac3: switched to DTS, 1411200 bps, 44100 Hz
> AUDIO: 44100 Hz, 2 ch, ac3, 1411.2 kbit/100.00% (ratio: 176400->176400)
> Selected audio codec: [hwdts] afm: hwac3 (DTS through S/PDIF)
> ==========================================================================
> [AO_ALSA] alsa-lib: conf.c:3840:(parse_args) Unknown parameter AES0

ac3/dts pass-through is a different baby, read
http://www.mjmwired.net/kernel/Documentation/sound/alsa/Audiophile-Usb.txt
on how to deal with it (you'll have to use different output device for
that to work).

-- 

Vladimir