Allan I'm sure that any search engine could pull up lots of sites.

I used the fantastic Midi search site below and looked for 'klezmer' - and went no further:

http://www.aitech.ac.jp/~ckelly/midi/help/midi-search.html

This site concentrates on Israeli music - but I understand that the definition of Klezmer extends somewhat wider than this. I have stumbled across a much larger (and better) site than this in the past. Let me know if you get into strife.

Regards John