Medieval and Renaissance Instruments: The Musica Antiqua ensemble shows off their nice collection of early intruments.
Medieval Music: From 'The Labyrinth: Resources for Medieval Studies,' sponsored by Georgetown University. A page of useful links.
Renaissance Consort: a Japanese site in which an enterprising lad provides sound files and pictures of himself playing a wide variety of instruments. Might be slowww...
The Crummhorn Home Page: an Australian enthusiast's homage to the "crooked horn."
The Renaissance Orpheus: a page devoted (and I mean really devoted) to the lute. Lots of pictures and purple prose...
MIMF Links to Links page: The Musicians and Instrument Makers Forum list of links, mostly related to instrument making, but full of fascinating digressions. Surf's up...