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HOW TO RE-ENCODE AUDIO FILES


"NOT IMPLEMENTED" ERROR


If you have received a "Not implemented" pop-up error message while playing any RPG Maker 2000/2003 game,
this is caused by
audio files that use a variable bitrate (VBR) instead of a constant bitrate (CBR).
These audio files include
background music and sound effects.



HOW TO RE-ENCODE AUDIO FILES
  1. Download Audacity.

  2. Download the LAME MP3 codec.

  3. Make a back-up copy of the file(s) you suspect is/are affected before you try opening them in Audacity, just in case.

  4. Open a file you suspect has variable bitrate (VBR) in Audacity.

  5. Open the File menu in the upper-left corner of the window, and select "Export Audio"
    (or use the Ctrl+Shift+E shortcut on Windows whilst Audacity is in focus).

  6. Choose MP3 Files from the "Save as type:" drop box menu.

  7. Choose "Constant" instead of "Preset" from the "Bit Rate Mode:" drop box menu.

  8. If you know the perceived original bitrate of your audio file, choose the nearest neighbor rounded up from the "Quality:" drop box menu to attempt to remain faithful to the source file's sound. For repair purposes, the default 128 kbps should work, but the file may sound different if it's too far from the source's bitrate.

  9. Save and overwrite the original file in the directory you found it in.

  10. If this is the first time you are exporting an MP3 from Audacity, it may ask you to point it towards where you installed or extracted the LAME MP3 codec's DLL file. It should only ask you to do this once unless it gets moved or deleted in the future.


CREDITS:
  • eltipejoloco for the instructions on how to en-code audio files.
  • Roden for the screenshot of the "Not implemented" error.