Last time I'm going to say this. No matter what software you use to import your audio, don't be surprised if it doesn't come out right the first time, specially if you just throw it in there blindly. You have every tool at your disposal to convert/master the audio, and it will save you time (and quality) in the long run.
<Sigh> So, the interpolation problem has been taking up most of my time, but I've made some progress. Compact frames use cubic hermite splines with single tangents (if anyone cares to know). Thanks to Dolphin I'm able to replicate the interpolation just like the game. The REAL question is, how are the tangents generated? Seeing as how all compact frames use the same format, I'm assuming they were generated upon conversion. That, or some poor soul had to put them in manually. If they ARE generated, something like Cardinal splines would make sense, but nothing seems to fit at the moment...