I don't know about trying TCPMP, but you should check out Kinoma FreePlayer... It lets you watch YouTube videos and a lot more... It's a media player... I uploaded it for you so you can download it if you want... I had a Mogul and it worked great on it...
If you want to read up on it a little bit, check out this forum...
http://forum.ppcgeeks.com/showthread.php?t=35669