Mike Hodnick is introducing SilverSynth - a digital audio synthesis library for Silverlight.
Quite simply, SilverSynth is a Silverlight library used to create awesome sounds in a web browser. It can be used as a core library for developing music-based applications or for just generating noise that annoys your co-workers. It supports synthesis of sine, saw, square and triangle wave forms, frequency modulation, amplitude modulation, panning, volume control, and dynamic envelopes.