Ever since it launched, people have waited for the RIAA or its member record labels to go after Muxtape. The site allowed individuals to upload MP3s that they had and create a streaming "mixtape" of music.

It was actually a pretty cool way to hear new music from individuals you trusted -- just like sharing mixtapes back in the 80s.

You might think that, perhaps, the recording industry would recognize how successful mixtapes were back then in promoting certain bands,...