I am running SUSE 9.1 on ASUS 7N8X-E Deluxe motherboard with AC97 codec. All sound applications (XMMS, Mplayer) have voice removal effect and I do not know how to disable it. XMMS does not use such plugin. I can't listen movies and listen music... just karaoke
0000:00:05.0 Multimedia audio controller: nVidia Corporation nForce MultiMedia audio [Via VT82C686B] (rev a2)
0000:00:06.0 Multimedia audio controller: nVidia Corporation nForce2 AC97 Audio Controler (MCP) (rev a1)
I even do not know after what this effect appeared.