Hi Loren
I did a google search for you at
www.google.com/linux and found this site:
http://www.gagme.com/greg/linux/fc6-tips.php
This whould help you get MP3 playback happening, at least.
As for the NVIDIA drivers, I remember seeing a site address around one of these threads somewhere, but cannot remember where. It was one of those sites that showed you how to do (almost) everything......sorry.......