The piano got more than 500 sounds that i want to use ,but Renoise dosnt play them. It plays the instrument that is assigned wich is allready on my computer 
Any suggestions anyone?
uhm, that wont work whatever you do.
you need to sample your piano.
mlon
You need to set MIDI Properties in Instrument Settings - that is if you want Renoise to sequence your piano. If you want to use it’s sounds and apply effects on it, you’ll need to record it first - Renoise doesn’t have audio in at the moment.
you could however create a loopback and have it record into a recorder.