Head over to the FFR Batch Forum for all the details on how you can get your file into the game. The Artist Permissions forum section will help you find out if FFR has permission to use the song your file goes with.
I read about this program on DDRFreak and it will let everyone play Stepmania online with other people a lot easier than SMOnline and SMLAN ever could. I don't remember the thread, so look for it on DDRFreak forums.
