General Security Open Discussion

Question about the security of files used in a Flash file especially with all these decompliers out there and what users can actually get with them?

The reason I ask this is because I am creating a site that has sensitive music files and they cannot be stolen in their digital format. These files are played when users click on an icon of a record/CD then playing the track selected.

The files are actually getting loaded from an XML into an emptyMovieClip so are they necessarily in the flash file at that time?

Thanks in advance,
MT