You can get cordless speakers, BUT they need power so either run on batteries or you have to plug them in somewhere. As far as TV leads go, all tellys need a source signal and that HAS to come from an ariel, dish or cable supplier, so you can't lose that one. There are wireless gizmos that will allow you to stream music from your PC to your hifi and video to your telly which may be in different rooms but it is yet another couple of boxes with cables to attach to your hifi and or telly.