How to make Flash add enough frames automatically for my mp3 import?

I have a 30 minute mp3 I need to embed in an .fla so I can export as .mov for conversion to .fla.

I tried adding frames, but you can only add so many at a time. At 30 minutes, I had added the max frames (going to the rigth) about 15 times and it wasn't enough.

Is there a trick to automatically adding enough frames to cover the entire imported mp3 on the timeline?

Solution

A flash movie can have up to 16.000 frames, if your mp3 is 30 minutes long there is no way you can embed it in your .fla (at 30 fps, which is a normal rate, you would need 54.000 frames, well beyond the limit). I guess you could reduce the fps of your movie to try to fit the entire .mp3, but you'd end up with a gigantic flash file, which might cause you problems.

So my advise would be to take a look at the ActionScript class Sound and/or a tutorial to load external sounds, for example:

http://evolve.reintroducing.com/2008/01/10/as2-to-as3/as2-→-as3-loading-playing-external-sounds/