John Chambers' ABC Music Collection - John Chambers' collection of contradance music in abc format, categorized by dance style. - http://trillian.mit.edu/~jc/music/abc/
Eric Foxley's Music Database - A database of over 1000 traditional British related folk dance tunes, searchable by musical content. - http://www.cs.nott.ac.uk/~ef//music/database.htm
Wild Dismay Tunes - About 100 dance tunes, mostly Irish, in ABC, GIF, and MIDI formats. - http://www.blackflute.com/music/tunes.html
Spuds Tunes - A collection of reels, jigs and others, in abc and notation (gif format); also include links to other tune sites. - http://www.thursdaycontra.com/~spuds/TuneLinks.html
The English Dancing Master by John Playford - Playford's tunes in abc format - the first collection of popular dance tunes published in the British Isles, in 1651. - http://www.ceolas.org/pub/tunes/abc.tunes/Playford.abc
An ABC Library of Morris Tunes - A library of morris tunes from the traditions of a number of different English villages (mainly Adderbury and Bledington). [abc format] - http://ucowww.ucsc.edu/~sla/morris/music/abclib.html
Country Dance Society Boston Centre - A collection of English country dance tunes in mp3 format, live recordings at dance length and tempo. - http://www.cds-boston.org/ecdc/