[HELP] ALSA won't work though installed properly

["J. L." <joris.lambrecht@pandora.be>]

Hello People,

Recently i re-installed my linux-system to stable and upgraded to
kernel-2.4.20, since i'm using an ABIT-AT7-MAX motherboard i had to
install ALSA-SOURCE 0.9 wich is the only package supporting the Realtek
ALC650 (VIA8233A) Chipset. I have installed ALSA and configured my
system accordingly.

lsmod give the output below wich i suppose should be correct :

snd-pcm-oss            36000   1 (autoclean)
snd-mixer-oss           9084   1 (autoclean) [snd-pcm-oss]
apm                     9536   2 (autoclean)
snd-via8233             4904   2
snd-pcm                49280   0 [snd-pcm-oss snd-via8233]
snd-timer              10600   0 [snd-pcm]
snd-ac97-codec         22640   0 [snd-via8233]
snd                    25516   0 [snd-pcm-oss snd-mixer-oss snd-via8233
snd-pcm snd-timer snd-ac97-codec]
NVdriver              945536  10

Still i cannot get any sound from my system, the mixer devices work but
xmms and most other sound-related applications simply crash when trying
to play an mp3 or any other file/url.

Can someone please let me know if he/she can come up with a solution ?

Thank You,

joris