As of StepMania 3.9 alpha 5, the answer is yes. To use this feature, copy the file "statistics.ini" file from the StepMania 3.0 final directory (usually C:\Program Files\StepMania) to the StepMania 3.9 directory (usually C:\Program Files\StepMania CVS).
* Be sure that you have copied all of your songs over from SM 3.0 final or else some scores will fail to import.
* When copying songs from 3.0 to 3.9, do not rename any
song folders. For example, if have a song in StepMania 3.0 at "Songs\4th
Mix\B4U", the song must exist in SM 3.9 at "Songs\4th Mix\B4U". If these
names do not match exactly, scores will fail to import.
Some notes courtesy of Aaron VonderHaar:
You can get the libmad RPM for RedHat 9 here.
RedHat and Mandrake users can get the RPM here. If you're trying to compile StepMania, you can get the SDL-devel RPM here.
You can press F3 at any time during the attract screens to toggle the CoinMode setting. This will let you switch back to CoinMode "Home" and get into the options menu. You can also use the operator key (default is scroll lock, but can be changed in the key mapping screen) to jump directly into the options menu.