First of all, great question. In my opinion 2 programs have been priceless. 1)MS Remote Display Control (allows for keyboard & mouse control of the PPC on the desktop)
http://www.microsoft.com/windowsmobi...powertoys.mspx and 2) GS Player (audio)
http://hp.vector.co.jp/authors/VA032810/ - allows for me to play streaming music from an audio server which I set up at my home (Streamsicle
http://www.streamsicle.com/ , another free software which you can request songs remotely through the IE browser interface. I needed a java program for PPC so I used EweVM (free)
http://www.ewesoft.com/ which is not true java but did the trick) . Good Luck, let me know what you think. :D