Speeding up sound in flash

I’m doing a project for someone and I can’t seem to find out any information if it is possible to adjust the speed of the music that is played back on the fly (so by a bar of some sort). I have a working example that just uses single sounds and an interval but we need an actual sound piece, not just one sound, to play faster. I’ve tried google and am usually lead to results of a converter.

any help would be great.

thanks,

justin