Can't hear soud in FreeBSD (XWindows)

[Quang Nguyen Dang]

My notebook is Sony Vaio VGN-S270B, I was installed sound card dirver and complied in Kernel but it doesn't work. I used xmms player or amarok, they can play mp3 or videos files but I can't hear any sound. I used 

#mixer vol 100
#mixer pcm 100

but same results.

My sound card:

------------------------------------------
pcm0: <Intel ICH4 (82801DB)> port 0x1c00-0x1cff,0x18c0-0x18ff mem 0xd0000c00-0xd
0000dff,0xd0000800-0xd00008ff irq 9 at device 31.5 on pci0
pcm0: [GIANT-LOCKED]
pcm0: <Analog Devices AD1981B AC97 Codec>
------------------------------------------

Please help me, thank you verymuch.

Quangnd.