Streaming Sound Question

With a "streaming" 30-second background music file it is my understanding that the music "starts" playing perhaps before it has a chance to download the entire song. The question is: Once it has downloaded and played the entire SWF in a client browser window, is this music as well as the SWF cached on the clients hard drive? And if so, when the URL is accessed a second time, does it re-download everything or does it play from the previously cached file(s).

Also, where in Mac OSX do these downloaded/cached files reside (if they exist).

Thanks!

Cached indeed. I believe the settings can be changed. Dont know about Macs at all though.