so to KLIPPER (original poster), ...you can't even drag and drop samples/audio clips, ...or record any audio (ie. use an audio interface) in fruity.
You'll only be able to work with the limited midi, and virtual instruments/sounds. no sampling, and no recording real instruments. it's up to you! To me, that's not enough, but for you it may be okay. it's up to you.
(not sure why this other dude came outta nowhere. ..but there you go, hope that helps)