Now Playing does not work with a paylist of "files"

[jayme-github]

I'm listening to audiobooks which I do not wish to add to my music library. So I always selected the folder via the "Music" -> "Files" menu (Queue/Play folder).
After the update to frodo and the recent XBMC Remote version from Play Store this does not longer work as expected.

The files are added to the playlist and playback starts but I cant select another track in the playlist and the "Now Playing" screen shows no information and does not allow so skip/seek within the playing track.