This is short for now because I can only think of one question. If you have more, let me know and I'll add them to the first post.
I can't hit more than two arrows with my keyboard.
This is a problem with your keyboard (and not StepMania). Most keyboards can't seem to hit more than two arrows at a time due to a number of issues.
One workaround is to remap your keys. Not exactly the best option if you like using the arrow keys, but changing your key mapping to letter keys may work better.
Another option is to buy a new keyboard. This is the more expensive option and requires some research.
Some keyboards known to work with more than two keypresses are:
- USB keyboards (not all, however)
- generic Dell keyboards (at least some older model Dell keyboards)
- Razer Tarantula
I REMAPPED THE ENTER KEY, NOW IT DOESN'T WORK!!!
In SM 3.9: Delete (SM folder)/Data/KeyMaps.ini
In SM 4.0:
Windows - delete (my documents)\StepMania CVS\Saves\KeyMaps.ini
Linux - delete ~/.stepmania cvs/Saves/KeyMaps.ini
Mac - delete ~/Library/Preferences/StepMania CVS/KeyMaps.ini