usage: xrns.py extract [-h] some-xrns-file-path

    Extract wavs from an xrns file to a "waves" dir:
    /waves/I01-InstrumentName_S01-SampleName_[loop start]-[loop end].wav


positional arguments:
  some-xrns-file-path  -

optional arguments:
  -h, --help           show this help message and exit