Well, if you read my earlier posts, I would suggest that since it is Flash ROM, and the SR ROMs can be accessed from the front panel, loading by way of .MID files could work.
One would convert a .SYX, .WAV or .AIFF or even RDAC files to a .MID file (similar to the way the SYSX2MID program for the JVs work) so you could play it on your sequencer, so it would intern load into the Flash ROM card.
The Trinity works this way. So do earlier Ensoniqs. The XP50 had a Flash ROM OS. I hear that this board would only allow SAMPLE PLAYBACK and not sampling. Even so, this would be a great addition to the JVs/XPs
The Infamous EPU.