that someone is using a windows mouse left handed, windows gives you the option to flip all mouse controls & that person will of either done that or gotten use to clicking the left button.
*it's a really "simple" game, no simple programs let you choose options that don't help use of the program. it's $20. it does precisely what it's designed to do, no extra junk to muck things up.
here's a thought: make it work! it's already an option, it's just hard to get at. they even fixed some of the issues with it in the latest version.
some people might want to listen to their own music while playing. or 