well, if you go with a wireless one, then it is almost a spy gadget.
we can still happily buy them in the us, but, it's still called by most people who sell it as a spy gadget.
it sounds to me like you want something more along the lines of what they use on tv shows, to makes sure each person has their own audio.
they make these both wired and unwired, and they make them on many different freq. bands.
radio shack has a few too.
www.radioshack.com
i take it you want something like this?
http://www.radioshack.com/product.a..._name=CTLG_007_008_003_001&product_id=33-3013
we can still happily buy them in the us, but, it's still called by most people who sell it as a spy gadget.
it sounds to me like you want something more along the lines of what they use on tv shows, to makes sure each person has their own audio.
they make these both wired and unwired, and they make them on many different freq. bands.
radio shack has a few too.
www.radioshack.com
i take it you want something like this?

http://www.radioshack.com/product.a..._name=CTLG_007_008_003_001&product_id=33-3013