Author's Response:
You will be able to see everything in a few weeks when I will release the library with support for .XM, .IT and .S3M :D
As for loading sound in flash 9, it is a bit tricky. Adobe release what it called ByteArray but you cannot simply load sound from it. What you can do however is load a SWF from that ByteArray, so to load a sound you created, you create a SWF with your sound playing in it. :)
I know my English is bad but I hope you understand what I meant ._.'
Thanks for the review !