FlowPlayer Playlist

I was able to get pretty much everything working by following the instructions and support data in here. All but playlists...

I can use [swf file="slide1.swf"] but if I make a playlist [swf file="slide1.swf&&slide2.swf"] it gives me the following error:

Could not display the flash because sites/default/files/slide1.swf&&slide2.swf does not appear to exist.

I thought it had to do with the expansion of the && into && so I corrected it directly inside the database. No success. If I write:

[swf file="slide1.swf"&&"slide2.swf"]

It only plays the first video, with no error output...

All help is welcome!