viocaia,

Unfortunately a user cannot create their own INS files as these are created by 'in house' software - pretty much compressed audio loops. As for the MSPs, if you use 64 notes per MSP with each sample about 2secs or less longer, you should be able to fit 8 MSPs at any given time. With OS 3.0 or earlier, you could permanently saves these so they are there when the keyboard is turned on and you didn't have to load/auto-load.

Thanks,

AJ