Torben,
I wonder, have you (in Build 17) changed the priorities for ID3 Tags and Meta Files ? Another system I use for library management has a habit of putting tabs (or lots of spaces) into the ID3 Comment field - when these load in mAirList, the playlist item is twice the size due to the Comments field showing.
I remember reading that an MMD file takes priority, but it doesn’t appear to in this case. I tried saving removing the blank Comment spaces and saving to Meta File, dropped the item back into the Playlist - and the Comment field was still showing, suggesting that it’s reading the ID3 first…
Naturally, I’m going to ask the author of the other software to see if they can stop writing to blank fields