GNUdap is a project to build a userspace driver to interface Linux with proprietary-protocol USB MP3 players and mass storage devices. Currently, GNUdap supports only the "Perstel,Inc. CHIC MP10". GNUdap is also an experiment to test the advantages of a strongly-typed programming language and of the functional programming paradigm in hardware development. GNUdap currently supports all features supported by the official program provided with the Chic, and has some additional features, like being able to transfer MP3s directly to the PC.
GLCaml is an Objective Caml interface for OpenGL versions 1.1, 1.2, 1.3, 1.4, 1.5, 2.0, and 2.1, plus extensions. It is intended as a compact drop-in binding. It is a direct, dynamic binding to OpenGL. An OCaml SDL binding is provided as well, along with texture-map scaling functions, texture mip-map generators, and a bitmapped font library. Extensive documentation and more than 20 examples are provided.
Liquidsoap is a powerful tool for building complex audio streaming systems, typically targetting Internet radio stations. It consists of a simple script language, which has a first-class notion of source (basically a stream) and provides elementary source constructors and source compositions from which you can build the streamer you want. There is no constraint on the streams, in contrast to many other tools which can only stream one file after another. Moreover, it is not restricted to a single stream. Finally, it interfaces well with external tools.