In JJ OS 2 you can record (or better yet render) your song as an audio file in Song Mode (Enter Song Edit and press Record [F3]) and then apply a fade out to that rendered sample in Audio Grid Edit (AGE). That's the most accurate thing you can do inside the MPC, I guess. But I also would suggest using an external DAW to do this, because you cannot undo fades in AGE. Hope that helps.
PEACE
P.S.: You can also fade out the sample in Trim Mode, but the max. fade out time is 1 second, so that's not really a good way of doing it.
Last edited by stan steez on Wed May 28, 2008 3:37 pm, edited 1 time in total.