smallman01313,
I have a Freecom FSG-3 NAS (Network Attached Storage) that I use to stream music to my Xbox 360. It uses a program called Twonky Media. The Twonky Media can be installed on a PC and in the latest versions can stream movies to the Xbox.
You can also create playlists in media player and use these on the 360 as compilations.
The website for Twonky is
http://www.twonkyvision.de/