Dr.Tag is an ID3 tagging utility that lets you set the Title, Artist, Album, Genre, Year, Comment and Track on multiple files in your MP3 library. Use the filename to define the ID3 Tag, or use ID3 Tag to rename files according to your preferences. Remove underscores, %20s, capitalize titles, set track number using track numbering mode or swap Artist-Album-Title in any order. It can do all this for you if you wish. Internal/External play funciton, manual rename bar, and many useful functions available from the list of actions on the toolbar. Highly configurable, with complete Undo function, you can save changes only when you finish editing and are happy with the result.