Do you have a normal aerial going into the lounge? If so, you could just connect a freeview box to that, and then use an AV sender to transmit the output to the other room. You'd have to go back into the lounge to change channel though (unless you could hook up an infa-red blaster... getting a big complicated though). The slingbox is an interesting suggestion, but is really designed for watching over the internet on a computer. Honestly, your best bet is to do it properly and get a new aerial socket installed in the other room. You should be able to find someone who will do a neat job for a reasonable price (maybe ?100 or so).