presentation: fade audio when playing video

Hello,

I use gwenview to make silde presentations from my trips. I like to buy 
some local music and play this during the slide show. It's simple, I just 
start playing the music in Amarok, and make the slide show in gwenview.

However, thanks to the modern cameras, I include more and more video shots 
as well. It would be nice if gwenview could somehow communicate with 
amarok (or whatever other audio player) to fadeout the music when a video 
is played, and then fadein back when the video is over.

Thanks
Daniel

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