Is it Traktor or iTunes?
When prepping a track in Traktor, I put some cue points on it, but sometimes when I change something about a prepped track in iTunes, all the Cue Points are gone. It could be that I changed the genre. Or Changed the genre in Traktor and then double clicked on it in iTunes so the genres are the same.
But not always! Only once every now and then.
But it's ALWAYS frustrating! What to do about it?
Bookmarks