Sound

Sound from the command line

	sudo apt-get install moc
	mocp -l <file>.ogg

Generate sound file with audacity

	sudo apt-get install audacity
	audacity &
  1. Choose "Generate" menu and 'tone' or 'chirp' etc.
  2. Choose time and other params.
  3. Click OK
  4. press green arrow to play
  5. repeat until happy with sound
  6. File->Export. Choose filename and .ogg filetype. Save. Use with moc (above).