Preloading sound?

Im trying to preload my flash site, I already have a preloader script which I know works in flash MX 2004 as I have tested it on some other sites. However on this new site I use a lot of sound which is attached to movie clips and exported for actionscript in the first frame…

when you go onto the site you dont see the preloader, wait for 5 minutes (on 56k) and then the whole site loads up.

I think because all the sound is exported flash loads it before the preloader?? anyone know a way around this or am I miles of track?

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