Last.fm Playlist Maker

Last.fm Playlist Maker will put artists given a particular last.fm tag into a Windows Media Player playlist.

tag:

Now there's a Greasemonkey script, so you can click a link on any last.fm tag page and get a playlist of artists with that tag! To use it, you have to use the Firefox browser with the Greasemonkey extension installed. Then click this link to install the Last.fm Playlist Maker script. A new link will appear at the top of Most Played artist pages. Click it, and you'll get a Windows Media Player playlist of their favorite artists.