Octave appears to assume that a specific sound playing utility will be available on a system but doesn\'t seem to provide the ability to specify an alternate. In the error
I am on a Mac (Yosemite), and discovered a simpler solution than what others have suggested. Just in case this is still relevant for anybody:
First install SoX: http://sox.sourceforge.net/
(via Homebrew)
brew install sox
Now on the terminal command line you can use:
play “/path/to/sound file.wav"
...and you will hear beautiful music.
But that command does not work from within Octave. This does work:
system(‘play “/path/to/sound file.wav”’);