I think building a master list in excel with each track and their meta data included would probably be a good idea, tedious to do, but then you can just copy and paste from it going forward. I don’t know which tags are the ones that work best to be honest and I’m not sure there would be a blue print anyway… I’m new to licensing too! Some libraries take you through their own tagging system, ticking boxes of tags that match your track. From everything I’ve heard, read & learned so far though it appears that having good meta data is crucial. But yes – very time consuming and all that typing, clicking pasting etc is the stuff of tendonitis! :-0 Good luck.