I'd like to know it,too ... I wal planning to purchase a Roland MX-1 for live purposes ... My aim was using Ableton Live on stage BUT considering the new features of S1 PRO, i think that its brand new "show page" function will continuously developed and improved, i'll probably update My S1 4.6 to 5 ... using it on stage would be great and i'd like to get some advices about setting S1 with Roland MX-1 but it seems that no one had this kind of experience ...