Hi i installed gentoo 2004.1 compilled mine kernel but when i boot i get the message :
Sound server informational message:
Error while initializing the sound driver:
device /dev/dsp can't be opened (No such device)
The sound server will continue, using the null output device.
you have to make a user be part of the audio group, in order for that user to use the soundcard.
And i recommend you to include your user in the groups wheel (for suing to root), tty (to use a virtual console) and users as well.
you do that by typi ng in a terminal:
$ usermod -G wheel,tty,audio,users user
you probably did not include support for your sound card in the kernel or you have not added the correct sound modules to the default runlevel.