send your music over both bluetooth and itv at the same time?

Anyone know if this exists yet? Let's say I have one sound system hooked up in the kitchen and I have a bluetooth receiver hooked to that, and I have itv hooked up to my living room speakers/tv/movie system. Then let's say I'm having a party and want to send the music to all the speakers in the house? I understand I could re-wire under one receiver..etc. But it would be a lot easier and cooler if apple had this one figured out already.