Free violin sheet music form the renaissance?

Try http://www.sheetmusicfox.com
They have a great variety of free sheet music, and a very powerful sheet music search engine.

I got the Chaconne by Vitali from 8notes.com the other day.

here it is being played. :

http://www.youtube.com/watch?v=AloBa9SPM...

here is the 8notes site :

http://www.8notes.com/members/2026.asp