Export to first frame,but still blank screen?

Hello ,

I make animation file size about 700K
at first i export mp3 sound on first frame (linkage) and then it problem with preload so i uncheck “export on first frame” and drag my sound on stage on same AS preload frame everything work fine,but before preload
it 's still a blank screen for a second.How can i solve this

[COLOR=#810081]http://www.miracleinspire.com/advertise[/COLOR] this is my animation

below is what i’m do.