Are you retarded? You don't "blow it out."

1st, yes, placing something in the air bag space has been done many times before.

2nd, the air bag and all it's components are removable. In addition, these components are usually very valuable. You can usually turn around and sell it for as much as a couple thousand dollars.

3rd, don't attempt this yourself, leave it to a professional, specifically a professional who's done it many times before.

When it all boils down, I'm willing to bet your best option is to just find another place to put your dvd player because not only are you going to fuck your car up, it's also going to cost a pretty penny.