I get the same thing sometimes if the wav is too hot. I notice the "clicks" much more when joining two separate wav files together. If thats the case, then one way I have found to combat the problem is to put a very minimal verb ( shimmer verb works nice) on the last fraction of the wav. Make sure you choose No Echo and keep the wet mix down to almost nothing. You can almost always cushion it this way so you dont get the tick sound. Might wanna also check in on Sonar. Pretty sure it is sample rate accurate ( or frame rate accurate, I cant remember...) whereas CW9 isnt.