Okay, 0.10.2-3 made it to extras. Many thanks for the votes! Also thanks for the other feedback on this forum.

I just promoted 0.10.2-5 to extras-testing. It contains a few fixes only.
The gstreamer player didn't pause when notified that the input buffers is running low. This caused an end-of-stream received prematurely. Now it pauses and you see the 'Buffering' message, like the with mplayer player.
Other things that didn't work and are fixed now are:
- Pausing only worked when a single movie/audio file was opened.
- Backward seeking in a mp3 file ended playing.
- A folder from e.g. the worldtv99 list, couldn't be copied (for pasting in the favorites list).
- Clicking on any of the links of the SMIL fiets start page, crashed the application.

Thumbs up welcome, of course!