http://www.magicnet.net/rz/world_of_audio/woa.html
This site is an excellent collection of resources of interest to the professional audio enthusiast. Users can search the site by keyword, or browse through the list of offerings, such as information on MIDI and digital audio equipment, material on audio file formats, a collection of tips, tricks, and techniques for recording quality sounds, and a directory of professional audio equipment manufacturers. There is also a searchable database of audio engineers and studios that can be added to by those working in the industry.