Amazing - thanks for taking the time to write up the process you went through. My situation sounds very similar and I can definitely reuse a large chunk of your

Amazing - thanks for taking the time to write up the process you went through. My situation sounds very similar and I can definitely reuse a large chunk of your approach. I'd planned on doing de-duplication first. In my case I have legacy copies of libraries - but also a lot of duplication in within the main itunes library (due to exploding itunes dbs some time ago - that was the point I switched to spotify so my ocd didn't kill me). Should be easy enough to script something to handle that scenario. I did something similar a while ago to sort out my iphoto lib(s). I saw the flat thing (I noticed it in the code). I don't think it would work in the particular case I ran into as the two discs are at the same level. As you say though, if I do a bit of grepping I could probably catch and adjust many of those before I start.