Thanks for responding Bobby. Bear with me ... I currently gig with a Midjay Plus and various controllers - mainly midi accordion. I recently purchased an SD1 Plus with an accordion bass unit built into the left hand. Iím hoping that I can eliminate the need for controllers. I use midi files about 75% of the time. I edit every midi file that I use (itís pretty easy with the Midjay), I especially want to know if I can edit midi files IN the SD1. For example, I change the drum and that is addressed in the manual, I usually eliminate strings and blaring brass, change other sounds, volumes etc. to fit my needs. Can that be done with the SD1? Also, I have trouble scrolling through midi file lists Ė the manual suggests entering numerical indicators to find files and or registrations. The manual also says that the Page+ - will scroll the lists but I canít seem to get it to work. If it is possible to do these things, I will replace the floopy drive with a USB drive. The information may be in the manual, but the manual is very tedious to me. I am grateful for any information and observations.