Ross Bencina has updated the Mac OS X version of AudioMulch to v2.2.5.
This is a compatibility update for Mac OS X Yosemite 10.10.3 and later, including 10.11 El Capitan. It fixes a crash when selecting sound files with BubbleBlower, FilePlayer, LoopPlayer or Drums.
To use AudioMulch on recent OS X versions please upgrade now. This is a Mac-only update, Windows users are not affected.