This document explains the filename methodology.

0001AA_M_00_DescriptiveSoundName.EXT
 \    \  \  \     \                 \
  \    \  \  \     \                 \_ the countainer for the sound file: RAW, WAV, MP3, MP4, ACC
   \    \  \  \     \
    \    \  \  \     \_ descriptive name of the sound
     \    \  \  \
      \    \  \  \_ bit rate: 16k, 24k, ...
       \    \  \
        \    \  \
         \    \  \_ Sound positioning. L=LEFT R=RIGHT S=STEREO M=MONO
          \    \
           \    \_ AtoZ*2 for indexing.
            \
             \_ Sequential always increasing number.