Log Message:
audio/fasttracker2: Update to 1.88

Changes since 1.87:

v1.88 - 06.11.2024
- Added an experimental .BRR (Super Nintendo) sample loader. Thanks to
  _astriid_ for suggesting this (and coming up with some base code).
- The tracker scopes now show a waveform that is more correct when using
  interpolation mode "No interpolation" and "Linear (FT2)".
- Fixed: The "Gaussian (SNES)" interpolation option had a small delay \ 
of one
  input sample point. Not a big deal, but I corrected it anyway.