Still hearing people talk about loading new audio styles into the S950. It has been told that this cannot be done in realtime. You have to load them (slowly!) into FLASH RAM like doing an OS update. Then you have to reboot. Plus, there's very little additional RAM, so you aren't going to be able to load in more than probably one expansion pak (and that may be only a few styles) at a time.

For live players, this is practically useless.