midis for the tunes in the DT are available online throught this site - there is a clickable link for each one.

the Yet Another Digital Tradition will display sheet music for any of the songs with tunes in the DT.

More midis are available on Alan of Oz's Mudcat Midi page

And I can provide quite a few more as midi or as Noteworthy Composer files.

The list of "found tunes" (songs without tunes in the DT whose tunes have been posted or submitted through the GREAT TUNE SEARCH is available on request.