Nokia N900 Media Player natively supports upnp connections and works well with coherence. No issues with local network connects, not tested remotely. Media Player discovers automagically and displays an additional icon + upnp server name that is not part of the standard home screen view (see bottom left corner of screenshot 1). Upnp is browsed like local media, using media player standard UI. Track playlength and some other information do not display correctly with FLAC. Streaming works flawlessly, and browsing is acceptably fast.

Tested (and in constant use) system: CSSU21.2011.38-1maemo1.1, with package for extended media types enabled.