+The Analog Real-Time Synthesizer, or aRts, is a modular system for
+synthesizing sound and music on a digital computer. Using small
+building blocks called modules, the user can easily build complex
+audio processing tools. Modules typically provide functions such as
+sound waveform generators, filters, audio effects, mixing, and
+playback of digital audio in different file formats. The artsd sound
+server mixes audio from several sources in real time, allowing
+multiple sound applications to transparently share access to sound
+hardware.