An easy-to-use interface to the sound card.
Available for downloading on the Hel Repository.
This program uses a lot of libraries written by other people.
GUI.lua, a wonderful GUI library written by @IgorTimofeev.advancedLua.luacolor.lua-- modified by me to work on Lua 5.3image.lua-- stripped the depenedncy on OCIF as I don't need it
doubleBuffering.lua, a library; provides a buffer that, when flushed, tries to use as less draw instructions as possible, drawing complex things really fast. Also written by @IgorTimofeev.- A bundled beautiful plotter library written by @LeshaInc; also modified by me: it now actually works and uses the doubleBuffering library.
This program uses the Apache 2.0 license. The text of the license can be obtained here.

