A top AIR app developer by the name of Jonnie Hallman (@destroytoday), has a link to the original sound file. You can find that link here.

iTunes Ringtones Thumb

The best thing about this particular sound file is how easy it is to convert into a playable ringtone file recognized by iTunes. To get your Super Mario Bros star song ringtone, simply follow these steps:

  1. Download the sound file from here.
  2. Once the file has downloaded, rename the extension to .m4r. (It comes as a .m4a file).
  3. You’ll be prompted to choose the file type you’d like to use, choose .m4r.
  4. Drag and drop your newly downloaded file into the iTunes icon in your dock.
  5. Sync your iPhone and enjoy.

Are there any other ringtones that you’d like to see for the iPhone? I’m still looking for the superman theme tune!