Hi, I just installed (after failing with about 5 distributions of Linux

, dont ask me how I managed to go through all those without getting one to work properly, lol

)
Anyway, I just got Knoppix installed and working, the only problem is sound. Now, running a 600E, I knew I would have problems with this, so I checked Google, but I couldnt find much help for Knoppix, I went into the sound and multimedia control centre, and selected ALSA as the Sound I/O, but when I click Apply, I get the message:
Error while initializing the sound driver:
device: default can't be opened for playback (No such file or directory)
The sound server will continue, using the null output device.
I am a Linux

, so I dont really know what to do here, if anyone can help id really appreciate it
Thanks alot!