Free online classified ads and job posting at Astanda.com
http://www.ccarh.org/
Stanford University project founded in 1984 offers free public access to large databases and online tools for music research and scholarship. Includes printable scores, voice-leading checkers, and scores and MIDI files for koto and tabla.
http://www.lib.uchicago.edu/e/su/cja/
Significant collection founded in 1976 at the University of Chicago including early recordings, sheet music, photos and piano rolls, much of which is accessible online.
http://www.classicalarchives.com/
Includes thousands of files (MIDI, MP3, and Windows Media Audio) from over 1000 composers.
http://www.classicalarchives.com/
Contains thousands of classical music files in MIDI format as well as live recordings. New contributions are solicited. A search engine is included. Suggests books, links to free sheet music, alphabetical index, featured composers.
http://w3.rz-berlin.mpg.de/cmp/
History, composer biographies (with portraits and sound samples), explanations of musical forms; dictionary of musical terms. For beginners and professional musicians.
http://www.cmt.com
Music network offers headlines, features, concert listings, reviews, history, interactive chats and merchandise.
http://www.completealbumlyrics.com/
Pop, rock, hiphop, r&b, soundtracks, and classical music. Searching by artists, title or album.
http://coombs.anu.edu.au/
The portal for several electronic journals and regional virtual libraries about Indonesia, New Guinea, Vietnam, and other South East Asian countries. The virtual libraries include photos, sound, videos, articles, and bibliographies.
http://www.rso.cornell.edu/marchingband/
Big Red Marching Band. Contains photographs, traditions, history, alumni, membership details, and news items
http://www.library.cornell.edu/music/
Contains a collection of printed music, sound/visual recordings and writings consisting primarily of Western music and dance. It does include a representative body of non-Western, folk and popular musics.
http://netjam.org/
A composer and a computer scientist, author of Netjam (a network music collaboration software).
http://www.loc.gov/preserv/care/record.html
Care, handling and storage of musical recordings in a collections environment, from the US Library of Congress. Includes an extensive bibliography.
http://db.etree.org
Huge database of music traders .shn lists. Search by artist, date, trader, or add your own list. For lossless .shn format recordings only.