linux // hardware audio device

• 4Front Technologies - Digital sound system for UNIX (Open Sound System - OSS).
• Advanced Linux Sound Architecture - ALSA - One of the premier Linux audio sites. It provides audio and MIDI functionality to the Linux operating system. Latest stable release is 1.0.24, 2011-01-31.
• Creative Open Source - Creative Labs OS Driver page - Contains information on where to find Linux drivers for a variety of Creative products including sound card and webcam support.
• Neuros Digital Audio Computer Open Source Site - Open source hardware for audio devices.
• Writing an ALSA Driver - A comprehensive guide to writing an ALSA (Advanced Linux Sound Architecture) driver. (2007)