i may be wrong, but isn't the "additional info" the looping and ppitch info (if any..example Acidized wav's)
I remeber back when I got the machine, there was a Wavelab meta-data issue.clicking an shi-ot. I think it was fixed in an OS update (maybe cool-edit has a few unique issues that need to be addressed), but I still haven't needed to embed loop points..the first post hints that the loop points may be big deal to this user.
I will include it in my next letter to akai...Ive been hammering suggestions for a while now, I suggest that everyone does...they reacted to the last bug reports fairly quickly...I suppose they may have been working on it already....but I think they realize that Akai-clout is down [mv-8000 outselling the mpc 4000, and the plethora of 4000s available used for low $$$]
Hopefully they will implement some user-requests to really bring the mpc series back to the front-line...on "easy-to-use " merits...what better source than the actual users.