I'm a new user of Mp3tag and run a small independent lable that produces a lot of original music. I'm wondering if someone could give me a suggestion for how to easily add isrc codes to my mp3s. Can I change the format of the tags panel to include an isrc field? Or do I need to type in the isrc metadata for each mp3 by opening the tag menu for each file I select? Since the isrc code will be different for each file, this could be very time consuming...