I am outfitting a stage with a projector and I am thinking about buying a wireless video device to use with a ceiling mounted projector. My question is: there are lots of high power guitar amps and speakers around. Will these amps and speakers cause interference with the wireless video device? The specific device I'm looking at is: http://www.infocus.com/Accessories/Wireless/LiteShowII.aspx which uses something similar to a 802.11 b/g to transmit the video signal. Has anyone used this device or other 802.11 b/g devices in close proximity to guitar amps?