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THE .SFX FILE FORMAT
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This is the documentation provided on the .sfx format that blood uses for it's sound headers. It gets spit out when you use winbarf apparently. 

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 Resource script file generated by BARF script extractor
 Copyright 1997, Monolith Productions. All Rights Reserved

 SFX data format
 int relVol; volume, 0-255
 int pitch; pitch change (fixed point)
 int pitchrange; range of random pitch (fixed point)
 int format; format of audio 1=11025 5=22050
 int loopStart; loop position (-1 means no looping)
 char rawName[9]; name of RAW resource

 end of generated file