Here is the link from the online Cakewalk Store on the Cakewalk. com site, for purchasing a DOWNLOAD version upgrade to Sonar X2 Studio:
http://www.store.cakewalk...ductid=10-CXSR2.00-20E If you scroll down to the bottom, you will clearly see there are 2 links for downloading the upgrade versions, based on which type of upgrade you qualify for.
If I am not understanding your issue, please provide the links you are using that are not getting you to where you can buy a download version of Sonar X2 Studio, and I will try to better understand and assist,
Bob Bone