Justin.tv has just announced a new copyright protection process it is initiating. The site is working with Vobile to filter content on Justin.tv using their database of content.
Interview with Muxtape CEO Justin Ouellette
Muxtape has been known in the past as a place where music lovers could create their own playlists of songs and share them with others like an old school mix-tape. Last summer, it was shut down after legal issues with the RIAA.