Found this new application currently in beta called Reble.fm which allows you to listen to music on a friends computer over the internet. But me thinks they need to get better legal counsel. The response to is this program legal is
"The key to Reble is that you're sharing music with a small set of people that you know. Copies of songs can only be listened to by one person at a time, so other potential listeners have to wait until you're done. Tragic I know. Since we're based on a streaming architecture illegal copies of songs do not spread, unlike filesharing programs. Finally, none of your library data is centrally stored, it's between you and your friends."
As one commentor point out on Techcrunch... Does anyone remember Aimster and how long it lasted?
Anyone want to predict how long it's before this app goes into the great beyond?