having problems with music streamer/windows?

i have a music streamer plus and it has worked great for several months. One of the best bargains in stereo equipment I've had to date. But when I removed it from one computer to another last week it quit working. Windows show that it is working and when i check the properties under devices it shows it playing but i get no audio out of either one of my systems now. I am running and have been running windows 7 on both systems. any help from anyone. thanks