there are plug ins that would allow you to use your cell phone as remote. i think it was called blue portal. there is also another programm for mobile phones but i forgot the name it was about 30euros anyway. blueportal seems to be picky with some cell phones but its worth a look.
Well if all you need is to be bale to use your remote without having to point at a receptor there's always the good old ATI remote wonder or one of its clones. It's not bluetooth, it's radio, but no need to point anywere and works through walls