How to load external sound - help fast please!

I have a clip i want to play in my as2 swf. But its a big file and it takes to long to export from the library initially ( it causes the preloading time on my swf to be like 2mins!). I’d like to load the sound later in the swf and start its playback before its completely loaded.

But i only know the attachSound methods for sounds in the library.

??? How do i load and play a sound from outside of my swf, like from a url ???