I don't have experience with that, but I just a Remote Extender Kit from Next Generation Home Products:http://www.amazon.com/ATH-433-REMOTE...&s=electronics
It is a really nifty device. It has a customized rechargeable battery that you use in your remote control. When buttons are pushed on the remote, the battery senses the signals and transmits them via RF to the base station which you place near the device you want to control.
In simple terms, by replacing one of your replay tv remote batteries you convert the remote to an RF remote. I use it to control the replay tv in my living room while in my bedroom.
It works amazingly well. But because it is RF, the range may be a factor.