Question: how can you fix rhythm problems when you're outside your main host and you have no timing reference. How will Melodyne UNO know the right timing or even the tempo? Even if you specify a tempo, it might not sync perfectly when you take the track back to your host.The idea is to record your track in your usual host.
Then you launch melodyne load your vocal/instrument wav file and you fix the pitch/rythm problem.
Now I will go and download the demo, which might clear up some of these doubts.