I have a box that is running fc2. If it is running kernel 2.6.8-1.521 then the following command works like a charm. mplayer -vo vesa:vidix -fs -zoom -double -ao alsa -ac hwac3 -aid 128 dvd://1 When i try the same command with the 2.6.9 or 2.6.10 update kernels I get no sound and the following error from mplayer. ALSA lib pcm.c:1851:(snd_pcm_open_conf) Invalid type for PCM iec958:AES0=0x2,AES1=0x82,AES2=0x0,AES3=0x2 definition (id: iec958, value: cards.pcm.iec958) alsa-init: playback open error: Invalid argument Could not open/initialize audio device -> no sound. Any help starting to track this down would be appreciated. Dave