Hey Raleigh did you ever figure this out?
A couple of things that aren’t obvious with using audio in IBA. There is a bug that prevents audio from playing. The workaround for the bug is to take the file extensions off in your html and in the name of the actual audio file. It was a huge pain to find out the solution to this but it might help you. Your html references an audio file as “audio/bassdrum.mp4” or something to that effect. You’ll have to make it read as “audio/bassdrum” and then make sure and remove the file extension from the actual file. That did the trick for making audio work in my IBA projects.
I have no experience with Hype but thought it might be a handy solution for making complex widgets faster. I’ve done lots of synced audio in widgets with JS though. I have generally used a library called mix.js and custom skinned it and made additional functionality I needed on top of it. You can check it out at http://kevvv.in/mix/
Hope you got your stuff working but I know I had some serious pain with audio files and at one point had accepted I’d never be able to do it. Otherwise, hope this helps to recharge you.
KD