In previous versions of Sonar i could not use any other sound
than the stock ones that came along within sonar.

If i copied some files into the metronome folder. I could not get those to show up and use em.

Now in Sonar X3, you can put other sounds in the metronome folder and use em as the click
nice work there CW, been missing that for a while 

Activate " show hidden files and folders " in windows explorer to, access the path below...

The Sonar metronome folder is located at:
C:\Users\"yourname"\AppData\Roaming\Cakewalk\SONAR X3 Studio\Metronome

List of Click sounds :

1.  Cubase             

DropBox : https://www.dropbox.com/s/oiuny6t91dwsihk/Metronome%20Clicks.zip