The web browser on Windows Mobile devices won’t play YouTube videos, but you can still enjoy them on the go with the instructions on Pocket PC Thoughts:
Anyone into watching YouTube videos knows it has always been pretty problematic to play YouTube videos on Windows Mobile. This has also been explained in my related article Playing Flash Video (FLV) files on the Pocket PC – is it possible? .
TCPMP Plugin for Flash Video on PPC for the rescue!
This solution is a little tricky on my Windows Mobile 6 smartphone because the downloader doesn’t work well without a touch screen. On the other hand, once you’ve downloaded the file, TCPMP is fairly easy to control using the softkeys. Read the complete article for suggestions, tips, and of course, the complete HOWTO [via] Link