Help an old man here... in the command center if I already own Melodyne Editor (full version) and AD 1.....
 
should I install the melodyne and AD2 in the command center?
 
Thanks in advance,
Jim 

I did not install Melodyne (and also own editor).  I think you will want to install AD2 (assuming you don't want to just stay with AD1 for some reason - then you wouldn't need to.)  I haven't installed AD2 yet, because I haven't had time to research the packs and stuff that you have to pick.

I own Melodyne Editor and AD2 so chose not to install either. The Command Centre makes this easy - if in doubt about a component then don't install, you can easily open it later on and install something. I've not installed quite a number of things this time round, e.g. loops. 

I already had AD2 as well, upgraded from AD1 a couple of months ago - the AD2 installer in the Command Center basically presented a "key" to register in my xlnaudio.com account, which made the bundle items available to pick and install (whenever)  - the actual install will be from within the XLN Online Installer.
 
I didn't install the Melodyne Essentials option either, having Editor.