Main files
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Prepacked BA2 version. Updates to include the Santatron.
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Loose files version. Updates to include the Santatron.
Optional files
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These are the original voice files, unedited. The only reason you would need these would be if you wanted to remove only "some" of the voice lines. I recommend using a media player like VLC that can play xwm files to tell which file is for which line.