Hi; here're this fine sets featuring music by Buxtehude as performed by Volker Ellenberger and Craig Cramer, respectively. I know there're other sets that come in-between, but these are the only ones I currently own. Enjoy and comment freely.

http://www.mirrorcreator.com/files/1GFZ6LXH/Buxtehude__Dietrich_-_Organ_Music__vol.1_(Naxos__2001).zip_links

http://www.mirrorcreator.com/files/6NDKWZPP/Buxtehude__Dietrich_-_Organ_Music__vol.4_(Naxos__2005).zip_links