Try the YouTube player in this ROM, the ULTIMATE YOUTUBE PLAYER...
http://forum.ppcgeeks.com/showthread.php?t=72943 .... I guarantee you it works like a charm, not only does it work, you get the ultimate in video resolution quality.. This is a full multimedia based ROM giving you digital movies via the new Saturn Liberty movie channel, plus over 2000 TV stations from over 71 countries and their is more multimedia stuff too ....