I managed to get this library (http://arduino.cc/forum/index.php/topic,112745.0.html
) working on an Arduino Uno (R3) in under 30 minutes and was very happy to hear the audio coming out of my speaker - however, when I tried connecting an LM386N-3 based 1W amplifier (http://ebookbrowse.com/n48fl-pdf-d393297795
) with a set gain of 50 (adjustable input attentuation via POT) to the output pin (using the recommendations in the docs (.h) for powered speakers), all I got was beeping noises rather than audio?
I tried another amp kit based on NE5532 chip and got the same result - which means I'm doing something very wrong :-)
Any advice appreciated!