Component cable ground loop

I have a component cable run through the ceiling to my projector. If the component cables are connected to the projector and then connected to the receiver, I get a "hum" in my subwoofers and speakers. As soon as I disconnect the component cables from the projector or from the receiver, the "hum" goes away. So the component cables are definitely a piece of the ground loop puzzle.

Any component cable ground loop isolators out there anyone can reccommend? Are there any other tests I should perform (ie trying different combos of connected cables)?

Edit: I should note that there is no cable tv or any other connection to the projector. Only xbox and xbox360 are currently hooked to the receiver via two compenent cable "in"s and the projector is hooked to the only component cable "out".

Well I ended up purchasing a CablesToGO Component Video Isolation Transformer ... I'll post my results here for future reference for others ... if this doesn't work, I will probably try a to find a highly shielded 25ft component cable.