Am 02.03.2013 um 18:43 Uhr
as far as I know, it isn't possible, to use the click from an external soundexpander (e.g.: fantom g8) and start the MP3-File on your MP11 by sysex.
I try it out, by using my equipment (-> Pa1Xpro / MP11) - unfortunately without success.
So I think, there is no possibility, to start MP3-Files on the MP11 by sysex from an external soundexpander and play then the click (from external soundexpander) and the MP3-Files on the MP11 simultaneously - SORRY.