If connected to MPD>=0.19 using address 127.0.01 and MPD supports 'file' URL handler, then pass local files as 'file://' URLS.
BUG: 574


git-svn-id: http://cantata.googlecode.com/svn/trunk@5611 b1e49159-3266-923f-9c3e-04f16369770a