How do I add music to a Adobe Flash?

[FOOLY]

Does the music have to be a certain type, such as mp3 or mp4? The Flash file is simply an animation.

Thank you!

Edit: Sorry for the misspelling!!! I meant, "an Adobe Flash file," not "a Adobe Flash."

[rajarajan07]

Yes, Make your audio as an mp3. In two modes you can play your mp3 files.

i) By including in the Timeline and play as an stream audio.
Means: Play even its not fully loaded.
ii) By including in the Timeline and play as an event.
Means: Play only if its fully loaded

You can load your mp3 from externally too.

[Lusiphur]

One thing to note about Rajarajan's solution that may not have been completely obvious...

As it needs to be a 'timeline' item (streaming or otherwise) it will only play for the duration of the timeline segment it is contained within.