More notification sounds not available?
Sorry guys found the part of the answer myself, hope it helps someone else who has a blonde moment lol although it didn't solve the inability to get more notification sounds through the phone features by hitting the "Get More" button it does allow you to add your own downloaded sounds, a good place to get them is http://www.zedge.net . However if anyone can help with the D/L notification sounds through the phone's "Get More" button issue it would be appreciated.

Change the ringtone, notification sound, and alarm from the Personalize screen.

Choose a ringtone or notification sound from where ever on your PC connect your phone to PC and transfer it to your ringtone folder on your phone,

On your phone slide the Notifications panel open, and then tap > Personalize. On the Sound tab, tap Sound set. Choose a sound set you want to customize (Ring tone, Notification or Alarm), and get your new sound by hitting the + Add at the top of the screen and choosing your new sound and then tap Apply.

All done

HTC One X automatically saves your choices to the current sound set.