wireless audio

can anyone suggest a good place to start looking for info and prices on whole house wireless audio systems like sonos and yamaha music cast 2, i have a pc running vista with an itunes collection containing over 800 ripped cd's and many podcasts(is used only for music playback), also have a large amount of a/v gear including yamaha recievers, adcom amps and preamps, and 3 sets of speakers that I am currently not using, any info is appreciated, thanx in advance