wohaaa , i have tested my rear output and it WORKS!!!
and i have no more problem with XMMS (error : soundcard blocked by another program...error like that)
THX OSS and all pplz help me!!!!
how to fix this error when playing sound in XMMS (error : soundcard blocked by another program...error like that) visit OpenSound
www.opensound.com rulez!!!
Download open sound and it's so easy to install because the driver have a Simple GUI.