A pretty neat mash-up for last.fm and muxtape users. 

Also, as of late this week, Muxtape has provided a “Buy this from Amazon” link for each streaming mp3 on its users’ pages.  Just like Apple did a few years ago by opening its music store (Apple understood that—at the time—most folks weren’t going to be filling up their iTunes with legally downloaded files and wanted to legitimize its software by at least offering the ability to purchase), this seems to be muxtape’s attempt at gaining credibility from copyright holders.