I hope I write it into the right topic.

So I have just installed Ni's Akoustik Piano. And I have connected my piano through midi cable. My problem is that when I hit a key, first I hear a midi sound then (after about 1 second) I hear the sample asounding and when I release the key I hear the midi sound again! I don't know how can it happen. I hear both midi and sample sound.
My other question is that what should I set on in Audio/Midi Setup menu? For Input I have only my sound card, and what should I set for output?

Excuse me if it isn't the correct forum, then please delete it, or move it to the right place.

Thanks in advance,
All the best,