Cannot configure PCManFM to invoke custom player for audio/video files

I’m currently using PCManFM 0.9.10 on openSUSE 12.2 64bit with LXDE.

I’m trying to change the property of audio/video files so that the console version of mplayer will play instead of the installed gnome-mplayer when I click on a video/audio file.

I right-clicked on the video/audio file and selected Properties. I selected Customize from the “Open with” dropdown. I then selected the “Custom Command Line” tab and entered /usr/bin/mplayer %U.

When all is done and the dialog box is closed, clicking on the video/audio file does not invoke the command line version of mplayer. It still invokes the default gnome-mplayer.

Does anyone have the same issue or am I doing something wrong.