thanks Mel,
mac compatability will depend on 1) usb recognition and 2) the equivalent jukebox program to load and use all the features of the SD card. If 1) works you should be able to use any mac digital recording software. I don't have a mac so can't say.
floppy copy is built into the 7000. See my reply to Alain for the structure. You can load by number exactly as you do now, or by alphabet, or by folder, or for audio or midi by playlist, or for technics or midi by favourites. Ex-SX6 owners will be very much at home with the navigation.