If you enjoy computer music and especially sounds generated by older gaming consoles, this project will be of interest. Sebastian Tomczak has described how an Arduino can interface between a Sega Master system and a PC to allow MIDI software on the PC to "play" music on the Sega. That is, when a note is selected on the PC, the Sega will play the note in its' own inimitable style.
The only catch (!) is that you need a custom ROM for the Sega. You can do your own following Sebastian's detailed instructions. Nevertheless, click here to get started. And for more, we're on twitter and Google+, so follow us for news and product updates as well.
If you're interested in computer sounds and Arduino, but don't have a Sega laying around, you can still have a lot of fun with our SOUND: sound and buzzer module:
It can be used as a noise-maker driven by your microcontroller for audible feedback of events, and it can also be used as a knock-detector input to sense events and react to them. Includes a built-in 1M resistor to allow the piezo element to detect shocks. For more information and to order, please visit the product page here.