Last.fm killed its RSS feeds, so this developer built new ones
RSS Feeds for Last.fm
Last.fm discontinued its RSS feeds, but lfm.xiffy.nl restores them for any username. You get four feeds: recent tracks, loved tracks, top tracks, and top artists, with optional periods from 7 days to overall. The service also adds album art as enclosures and now supports recommended tracks in both RSS and Soundiixx-compatible JSON.
So you we're looking for the RSS Feed of Last.fm, and then discovered they were gone! Well, the solution is right here, all you have to do is tell me your username and i'll give you four URLs