My name is not Jeff, so I hope I am allowed to post here :-)

You have three alternatives:
1) IR router like Jeff said
2) ProntoPro with three RF stations - I have not tested this because the PP is still brand new and the RF base just came out last week
3) RTI T2 and the IRF-6 ( I don't know if you need more then 1 IRF-6, since I have not tried it)

Here are some links

Pronto Pro
Review: [Link: remotecentral.com]
Forum: [Link: remotecentral.com]

RTI T2
Review: [Link: remotecentral.com]
Forum: [Link: remotecentral.com]