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Computing device to allow for the selection and display of a multimedia presentation of an audio file and to allow a user to play a musical instrument in conjunction with the multimedia presentation

  • US 20050120866A1
  • Filed: 03/01/2004
  • Published: 06/09/2005
  • Est. Priority Date: 11/21/2001
  • Status: Active Grant
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1-20. -20. (canceled)

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