I'm trying to decide on a music on-hold source for a Nortel Option 61C PBX. I'm limited on what I'm allowed to purchase because certain requiements have been imposed upon me by my manager. I do not want anything that will incurr Royalty Fees. I prefer a MP3 or CD player. I'm interfacing to a Universal Trunk Card on the PBX. My problem is that all the TNs that come out of the PBX are hardwired to the back of patch panels. The front of the patch panels are RJ11 connections. I would need to be able to plug the output of the source device directly into the RJ11 connection on the patch panel. I would like for this to be a clean connection without having to modify something to make it work. If nothing else, I would like recommendations on a source device for music on-hold, regardless of whether or not the output can be terminated directly to a RJ11 connection. Thanks!