The answer to your first question is yes. Go into the Mixing Console/Line Output and change the Mic to Sub1, Sub2, etc. As long as the Vocal Harmonizer is enabled (green light on) the Harmonizer should work with the Sub1, Sub2, etc.

Second question: Is it hard to set up files and load the floppy disk? You mean, setting up files on the Hard Drive? Not at all. Put the Floppy Disk in the Floppy Disk Drive of the Tyros and if the floppy has Styles on it hit the Style button 'D' then navigate to the FD tab. Copy or Cut the Styles you want to place on the HD1 (Hard Drive) press Copy or Cut, Hit OK, then navigate to the Hard Drive and then press Paste. The Styles will be Copied or Cut from the Floppy Disk onto the Hard Drive. If the Floppy has Midi songs, insert the Floppy Disk in the Tyros Floppy Drive, press 'A' button near top left of LCD screen and do the same thing with the Midi files.

NOTE: If you use the Fast Access Utility on the Tyros (with OS update 1.20) in conjunction with the USB between the Tyros and your PC/MAC to transfer Files to the Tyros Hard Drive, make sure you DON'T transfer "too many" files or too much data at once. If you do transfer too many files at once and try to access them on the Tyros Hard Drive you will encounter an error that says: "too many files in the Folder" and the Tyros won't be able to access those files. They ARE ON the Tyros Hard Drive but you have no way of accessing them. I ran into that problem myself and I had no other choice but to reformat my Tyros Hard Drive!! And in doing so I lost all my other files that were on the Hard Drive. I didn't have too many other files on the Hard Drive so it was no big deal but nevertheless people should know about this file transfer amount limitation. I'm still not sure what is the 'maximum' amount that can be transferred before the Tyros is unable to recognize the Files in a Folder. The Manual seemed to be silent in that regard. And I'm not sure if it's the actual 'number' of FILES or if it's the amount of 'data', ie., Mega Bytes, etc. transferred before the Tyros can't recognize it/them.

Best regards,
Mike