Moan lets you create samples in Lua which can then be played back by using an audio source. I used this technique to create sound effects for my version of Pong, but that is another story. Moan is just a single .lua file which is available at my git repo: http://www.github.com/vrld/Moan.
I have assembled three demos - a virtual keyboard, a sequencer and a weird thing with colored circles - so you can see what YOU can do using Moan. I was to lazy to write a reference and/or introduction yet, but you can look at the examples to see how things work (I suggest to start with the keyboard demo).
Let me know what you think about it
vrld
Edit2: Since no one will read the readme on github, I included a help button. (attachment updated)
Edit: Screenshots:
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and vrld explaining it to me would make me 
