Question:..What is the best way to navigate between
Registration Bank mode and MP3 Song play mode During live play,....going back and forth....?

AJ>>>>The best way is:-
* Press the PLAYER 1 button.
* Go to the folder that has all your MP3 files. DO NOT PLAY ANY.
* Now press the REGIS button and go to BANK 1 (or wherever your registrations are).
* You can now load your registrations and play live (PLAYER1 stays on).
* To back to the MP3 folder where you were, simply turn off the REGIST button.
* Touch your song twice to play it ... or press ENTER on the highlighted file.
* To return to live play, simply press REGIST again .... just one button to toggle back and forth!!!!

Also .... when you are in the STYLE screen ... if you want to have the YAMAHA approach and access to all fills and breaks, simply touch the (1/3) - PAGE 1/3 to go to page 2/3. Now you have access to the fills and breaks. If you go to Page 3/3, you can program the USER1, USER2 ...etc, to whatever function you want.
Simply touch them, assign and save. Now isn't that neat?