Later models have a DMR, Digital Media Renderer. This allows you to use the player as dumb device and select what you want to play remotely, and push it to the player from a client device such as a phone or tablet.
http://www.mede8erforum.com/index.php/topic,17286.0.htmlThat tip also describes how to pull the stream in via normal UPNP. So once setup you select what you want at he source end, which is what DMR is all about.