boroda74 - THANK YOU! I'm amazed at how quickly you were able to do this.
Just one thing - when I store the <Date Created> field into one of the Custom fields, MusicBee doesn't know that the field is a date field, and so when sorting on that field, it treats it as a alphanumeric field. This resultant sort shows all songs in January, then February, etc. regardless of year.
Is there another tag I should copy the <date created> tag into that MusicBee will treat as a date field, or would it be possible to create the field in the yyyy/mm/dd format so that an alphanumeric sort works?