I been struggling with this problem since i updated to the RTM version of win7. I know the play to is suppose to work between windows 7 PC but for me the only way i can get it to work is if i have WMP 12 open. If WMP is not open then all other windows media PC's can not see and device. So is there a way to make it work without the need to open WMP. because that kind of defeats the purpose if i have to go to a different pc and open WMP because then i can just play the media on that PC anyways and won't need play to. I want to have it so that in the playto devices the different pc's are always there (even if the PC is shutdown)and when you try to send a song to a different pc it forces WMP to open automatically.