Mac OS X only: Free application SweetFM is a dual-purpose iTunes and Last.fm controller complete with keyboard shortcuts, remote control support, and more. Oh, and did we mention it also saves your favorite Last.fm tracks directly to your iTunes library?

Previously a $29 application, SweetFM is now a free and open source project that anyone can enjoy.

The application can control either iTunes or Last.fm playback, and the excellent built-in shortcuts include integration with the media keys on your Mac keyboard. Probably its most interesting feature, though, is the option to export favorite songs, favorite playlists, or even every single track you listen to, directly to your iTunes library. We’re not sure how Last.fm would feel about that feature, but users will probably like it—a lot.

SweetFM is a free, open-source application, Mac OS X only.

SweetFM [via TUAW]

SweetFM Download Page [Google Code]

via SweetFM Brings LastFM to Your Desktop, Saves Songs to iTunes – Last.fm – Lifehacker.