Motif rack WON'T do, unless you are using it in GM mode (yes there is a control to do this). And if you are doing that, you would be better off using another GM sound module as the Yamaha does not have the best GM set available, imo.

You can create a Cakewalk INS file for the rack presets (if you want one I probably still have one somewhere) to load into OMB, but my experience with it and the rack was not acceptable for live performance.

Chord timing glitches being the main trouble, even on latency of 6ms. And to be fair, this is more the fault of the "bloated" Yamaha styles and not OMB, but it made the use of some of the more modern styles, lets say later than the PSR 1500, mostly unusable.Unless the user did some serious tweaking, which of course took away most of the character of the style you wanted to use.

You also need to tweak velocities on the style itself as some are too strong, triggering unwanted ambience sounds with some patches. (talking preset patches, not GM). Again not the fault of OMB, but yamaha styles.

Bottom line, you CAN get the rack to work with OMB (or Live Styler for that matter) but O.O.T.B??? Apart from GM mode, Nope!

To be honest, it IS great if you want minimalist style action (which is what you have left after editing)behind live playing. For those of us who sing and are not just instrumentalists, this is probably a good thing.

Perhaps this latest version may be better. I will certainly be checking it out.