Muxtape had been giving people a new, interesting way of interacting with music - taking it as something more than just a vast, undifferentiated sludge of tracks and creating something careful and crafted, on a par with the mixtapes of the past.
It was only a matter of time before the RIAA blundered in. The site is currently closed, although there is a hopeful message on the Muxtape blog:
Beta users of Muxtape For Bands: you are unaffected by this outage.
For the moment, though, the front of Muxtape reads: