I'm having some trouble with S98 files in the new Audio Overload; some of the the ones I've downloaded from Rophon's site,
PSP , play just the first note and then hang on it. I'm using the Mac version of Audio Overload, if that makes any difference.
I've tried several sets, among them Yu-No and Popful Mail, and many, though not all, exhibit this behaviour. (Misty Blue and Ys do work, oddly.)