How to play sounds

Click the speaker icon in the cell bracket to play a sound once.  Click the sound graphic to play the sound in a loop.  Click outside the graphic or press any key to stop the loop. To control the volume, use the keys next to the Power key on your keyboard (NeXT), or the volume control setting in your Control Panel (Macintosh).

Play[Sin[(Sin[t^4] Sin[Sqrt[t + 10] t]) t] *
	 Sin[Sqrt[t + 6]^4] Sin[2000 t], {t, 0, 40}]

by Arun Chandra