Dynamic Sound sample rate problems

Adobe's Dynamic Audio generation page states that dynamic audio is sampled at 44100hz. I am using a dynamic audio generation library and setting its output sample rate to 44100 hz, and when fed into the Sound it is at half speed. I assume that Flash is actually sampling the audio at 22050hz instead of the 44100hz in the document. I can decrease the sample rate output by the library, which makes the audio play at the correct speed, but it kills audio quality.

What should I do in this situation?