Having some problems setting up my new new(ish) HT system. I have an 11 year old Denon receiver w/ Dolby Pro Logic for surround, some older Polk Audio speakers in the center and 2 front positions, and just bought 2 Polk FXi 30's for the rear. But I'm having 2 problems: 1- The rear speakers have a staticy sound, which doesn't make any sense as they are brand new. 2- I just made a Dobly Digital 5.1 version of my first short film. It's a silent film in the tradition of Charlie Chaplin et al. and I added the sound of a projector to only the rear channels to give it more of a theater feel. But the projector sound also plays in the front and the levels don't seem quite right. Is this a problem of playing Dolby 5.1 on a Pro Logic only receiver, or should I look elsewhere to find the problem? Thanks ahead of time for any advice or help!