[MPlayer-users] AC3 and DTS passthrough in OS X

[Marcus Svensson]

I have a M-Audio Transit USB soundcard with AC3 and DTS passthrough 
capability in Mac OS X 10.4.8 (Intel based).
When I add the "-afm hwac3" to the command line, all I get is choppy 
sound. The sound is just like the sound I get for half a second when the 
soundcard changes from PCM to AC3/DTS in a player where passthrough works.
Passthrough, for example, works in VLC.

Isn't my soundcard supported by MPlayer, or is this a known problem with 
MPlayer in OS X?