Concatenates the audio of the audio or video files given at input, normalizes its volume (so that they all present the same maximum volume), and converts the resultant audio to mp3. The resultant file can have its metadata edited (ID3 tags) at will. This version of the app is easier to setup, because it creates shortcuts. The Portable version of the application is portable - it can be run from a pen drive, but it does not create any shortcuts. For Windows XP you must use the portable version of the application; for Windows Vista, 7, 8, 8.1, or 10 you can use either version.