Can you make the music files smaller? What is the type of file you’re using for music?
For flash target I use all mp3, soundfx and music. For other targets I use ogg. I optimize in Audacity to make them small as I can with good quality, and if you don’t need stereo, convert them to mono and it’s basically half the size.
I tend to go with shorter music lengths, which also affects the file size.