See : http://alsa.opensrc.org/index.php/AlsaSharing
Make udev assign the right permissions to the sound devices, but putting the following in /etc/udev/rules.d/90-alsa-extra.rules : # Fix up sound devices for all usersNAME==”snd/*”, MODE=”0666″
In /etc/asound.conf, something along these lines :pcm.card0 { type hw card 0# mmap_emulation true}pcm.dmixer { type dmix [...]