I have a DSM 520 and I like it alot. I am in the process of upgrading my system to a Crestron controlled system. I would like to have the same media player that plays files from my PC but I want to be able to add RS 232 control for feedback to my system so I can possibly browse files on my PC using my remote. The DLink does not have a RS-232 control port. Any ideas if there is a similar device with this port.