Actionscript 3 :: Use Flash To Play A Sound Track From Different Files Seamless?

I have some audio files on my http server, and I would like to write a Flash client in ActionScript3 to load those audio file and play them smoothly. Of course I can just create a Sound object and load it by .load() with a URL request. But for saving the bandwidth, I prefer to load audio file chunks on demand. For example, there is an audio file let's say 100MB. If we try to load as fast as possible when user open the page

<--------- 100MB ----------->

The downloading may finished within minutes, but let's say, if user stop listener in halfway, that's kind of waste to load whole soundtrack at first.

<--------- 100MB ----------->
^--- user may stop here

To solve the problem, I think it's better to split the big audio file into small chunks, load and play them on demands.

<--- 10MB ---><--- 10MB ---><--- 10MB ---> ...
^--- user current position

I want to design the player, let it load audio chunk by chunk, and only load it when it's near the end of current chunk.

How to load those chunks and play them smoothly? I can probably create Sound object for each chunks. But how to play them seamless?