Bug#583398: opening files from thunar does not work, wrong path arguement in smplayer.desktop?

[Maia Kozheva]

It seems that the issue here is the handling of urlencoded filenames. When I try 
to play a URL without urlencoded (%xx) characters, it opens, but not with 
urlencoded characters.

smplayer file:///tmp/Inception.avi works;

smplayer file:///home/sikon/%D0%92%D0%B8%D0%B4%D0%B5%D0%BE/156625.avi doesn't.

It's definitely inconsistent behavior; I tested with gnome-mplayer, vlc and 
gwenview, and they do accept such URLs.

I'll test and upload the patch. Thanks for your work!