Thanks for the response ccomley. Firefly certainly does find all the MP3 files if you don’t copy the XML file onto the NAS drive, but it won’t find playlists without it. With it, I can see all my playlists, but for some reason it finds all my MP3’s twice. That’s what prompted me to delete the XML and try Firefly’s own smart playlist function, but I’m struggling to get it working for playlists that require info from the iTunes XML, e.g. ratings.