Premature Audio

I’m having a bit of a problem with Flash 8 audio placed on the timeline playing before it should.

For example…

I have a VO snippet in the form of a .wav file placed on the timeline at, say, frame 400.

I have a stop() actionscript at frame 300, which should prevent the audio from playing.

However, just prior to frame 300, the VO snippet will begin to play for half a second until the timeline reaches the stop frame, at which point the VO stops.

I’ve got the audio clip set to streaming, and the timeline is running at 30 fps. Any ideas what’s going on?