JimH and Arindelle, thanks for your quick reply.
Yes, the tags are stored in the wav files. In MM there is an option to synchronize tags which actually “writes” in the wav file the tags that are stored in the library. You can delete the track from the library, import it again and the tags are there.
In fact I have tagged the very same wav file with different values in MM and MC (e.g Rating=1 in MM and =4 in MC) and the file stores both. You delete the file from both libraries, import it again and the tag content stays as 1 when imported in MM and 4 when imported in MC. So it seems that the two programs store the tag information in the wav files in different places or formats.
Arindelle do you know how I could remap these fields, as you suggested?
Moving to FLAC is not a good option for me. I use my wav files in other devices that do not accept the FLAC format (my car hard disk reader, iPod, etc.)
With a library of more than 20.000 tagged files I would no migrate from MM to MC unless I can import the tags easily. And I would be very sorry if cannot do that, since I like the sound of MC much more than the one of MM.
I will be very pleased if you or someone else could help. Thank you.
Pluvio