In Windows at least (not sure about other OS'), each file has a "date acquired" attribute. Is there a way to alter this in mp3tag? It's different to the "date" property that's listed. I tried making a custom one in the "Customize columns" section, but even though I called it "Date acquired", this doesn't actually alter the official Windows tag (which remains empty), rather it just creates a new, non-standard tag (i.e. one that can't be selected to sort by in file explorer).