Dynamic MP3 Loading

Ok, the wanted scenario:
On the first frame, the playhead is stopped. There is a dropdown list with songs. The user selects a song and presses a button. Playhead moves to frame 10 where there is a progress bar. MP3 is dynamically loaded as an event sound, and the progress of its loading is reflected in the bar. When loading is complete the bar fades away and the mp3 plays.

Help! I just more or less need the axn-script. I know how to load the MP3…but for some reason, it doesn’t load the MP3 when it’s on a server, but it works locally…
mp3 names used are music.mp3 and JimmyEatWorld.mp3 so you may test locally.