A fresh version of Frets on Fire is out. This time around we focused on general bugfixes, performance improvements and making the game run more smoothly, especially on older computers. Only a few new features were introduced, most notably the support for importing songs from Guitar Hero Encore: Rocks the 80s.
If you used the Windows installer package of the previous version, please uninstall it before using this latest release.
Release note:
http://unrealvoodoo.org/hiteck/blog/frets-on-fire/frets-on-fire-12512-released/