Version:           unspecified (using KDE 4.5.4) 
OS:                Linux

I'm running slackware-current with KDE 4.5.4 packages. Recently, phonon-mplayer has been added to the distribution packages, so I installed it. I also compiled a phonon-vlc git clone on the 12th of december to try it with VLC 1.1.5.
Most things work fine, except that the audio and subtitles selectors in Dragon Player do not work when the phonon-vlc or phonon-mplayer are used, while they do allow to choose on the fly the audio and subtitle tracks when phonon-xine is used. The menu do provide the appropriate entries, but they don't allow selection.
The selection does work with kaffeine, so I guess this is an issue with Dragon Player and not with phonon-vlc.

Reproducible: Always

Steps to Reproduce:
Install if not available the phonon-vlc backend and the VLC player. In System Settings -> Multimedia, choose the VLC backend as the default one (the first in the list).
Open in Dragon Player a DVD or a MKV file with multiple audio and subtitles tracks, start to play the film then try using the menus on the upper right to change the audio and/or the subtitle track.

Actual Results:  
The first audio and subtitle continue to be used, whatever the selected tracks in the menu

Expected Results:  
The selected audio and subtitle should be played.