Hi Richard, Thanks and this small board is currently mounted on a larger interface PC board I designed so there isn't a website address only my logo and information. I have had this small board for several years and lost the original directions. It works and is capable of providing up to 16 different sounds.
Don't know. Looks like an amplifier board, the chip on the far right is an amplifier chip, LM386, so you can get the data sheet online, and trace the pin outs. Perhaps the other chip may be an opamp to buffer the input, or provide some sort of eq? Can't read the legend in the picture.