Found some additional info around being able to transfer things if purchased from the same store.
So, to refine my questions.
I got my copy of the mobile slingplayer directly from Slingmobile since when I purchase my original slingplayer I got a free copy of slingplayer mobile for Windows Mobile.
What I found in some FAQ items was that if you got a demo/trial version you could input your old code and thus switch your registration.
I cannot seem to locate a demo/trial version for Android.
Am I on the right path?
If you had done a search on 'Android' on the forums you will find there are dozens of threads on this subject. We really didn't need another one
Try this one for starters https://community.sling.com/message/11093#11093
Or this one https://community.sling.com/message/12915#12915
Or this one https://community.sling.com/message/8254#8254
The list is endless