Problemer med lyd i gentoo

Jeg har forsøgt at få mit lydkort til at virke i linux gentoo. Det er et

0000:00:1f.5 Multimedia audio controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02)

Når jeg starter /etc/init.d/alsasound skriver den følgende:
* Loading ALSA modules...
* Could not detect custom ALSA settings.  Loading all detected alsa drivers.
*  Loading: snd_intel8x0...                                            [ ok ]
*  Loading: snd-seq-oss...                                              [ ok ]
*  Loading: snd-pcm-oss...                                              [ ok ]
* Restoring Mixer Levels...                                              [ ok ]

Men hvis jeg forsøger at afspille en mp3 med mplayer skriver den følgende:
MPlayer 1.0pre6-3.3.5 (C) 2000-2004 MPlayer Team
CPU: Intel  (Family: 8, Stepping: 1)
Detected cache-line size is 64 bytes
MMX supported but disabled
MMX2 supported but disabled
SSE supported but disabled
SSE2 supported but disabled
CPUflags:  MMX: 0 MMX2: 0 3DNow: 0 3DNow2: 0 SSE: 0 SSE2: 0
Compiled for x86 CPU with extensions:


Warning unknown option cache_min at line 144
Warning unknown option cache_prefill at line 147

77 audio & 189 video codecs
Playing Moi Caprice To The Lighthouse.mp3.
XMMS: found plugin: libmikmod.so (MikMod Player 1.2.10)
XMMS: found plugin: libvorbis.so (Ogg Vorbis Player 1.2.10)
XMMS: found plugin: libxmmsmad.so (MAD MPEG Decoder plugin 0.8)
XMMS: found plugin: libmp4.so (MP4 & MPEG2/4-AAC audio player - 1.2.x)
XMMS: Closing plugin /usr/lib/xmms/Input/libmp4.so
XMMS: Closing plugin /usr/lib/xmms/Input/libxmmsmad.so
XMMS: Closing plugin /usr/lib/xmms/Input/libvorbis.so
XMMS: Closing plugin /usr/lib/xmms/Input/libmikmod.so
TiVo file format detected.
MPEG: No audio stream found -> no sound.
MPEG: FATAL: EOF while searching for sequence header.
Video: Cannot read properties.
No stream found.

og ingen lyd
Brugeren som afvikler mplayer er i audio gruppen.

Hvad kan der være galt.