Actually, it seems I was using an older build of FoF somehow. But it still has the problems recognizing the guitar's strum. Perhaps they should build support into the game for using an axis as a strum?

Yea, AutoHotKey doesn't have a linux version. But I've found a small odditiy: calibration programs can find the guitar and such, but FoF doesn't. Even stranger, I know it's trying to open /dev/input/js0 twice, despite working the first time.

Any similar setup for linux? Like perhaps an alternative to joy2key?