Thanks for response.. I tried your script and it works perfectly!
BTW, can you explain again what exactly happens with the 'update' action? Does this update the script to the latest version?
I use your script in combination with something I found here. This is because I like the smart case style better than the mixed case style of Discogs. I also added a few replace commands (e.g. " / " becomes "/") in the action group. Lastly, I use tag-filename conversion to properly convert the tags to filename (e.g. "/" becomes ", ").
What I notice is that if you want the tags to be (close to) perfect you have to do most things manually. This especially concerns finding the release you want to use and the correct label, EAN and Register ID. It also applies to finding the right composers. I find myself going through several sources like Allmusic, Wikipedia and Discogs to make sure I get it right.
I guess it will always stay this way 