Currently I have two receivers, an HR54-700 in the living room and an HR24-500 in the bedroom. What I am wondering is ... if I wanted to replace one of these receivers with one that had wireless capabilities to occasionally take in the weight room. What all would this entail, would it be just an upgrade on one receiver, is there any additional equipment needed, or any additional requirements? I have been a customer since 1999 and haven't upgraded anything in quite awhile. Thanks.