Bummer. We have been covering make-your-own-mix site Muxtape since its launch earlier this year, but now the site is down with this sad message being the only content:

Muxtape will be unavailable for a brief period while we sort out a problem with the RIAA.

I wonder what the problem was? Did the RIAA's Yeasayer song not properly upload? Did they accidentally post the wrong Diplo remix? We'll update you on the fate of one of our favorite websites when we find out.