You can also run the 32 bit version of Sonar side by side with the 64 bit.
Check in your Command Centre download folder(defined in the paths page of CCC) and double click the latest Sonar installer.
At some given point you'll be given an option to install 32 or 64 bit version. Choose 32 bit.
It will be installed by default in the C:\Program Files (x86\ Cakewalk\. Folder
For best organisation keep your 32 bit and 64 bit plugins seperate. And direct the appropriate Sonar version to the appropriate Plugin folder.