Hi 
  
If you have the latest Mac OS it kills the compatibility to read AVCHD files directly from your camera card. 
  
A free way to read your files is to create a script that opens the single big PRIVATE folder so you can see each of the files. 
  
But Christiano's method is really good. See the link below. 
  
  
http://cristianogiardina.com/quickly-access-your-avchd-files-in-mountain-lion/ 
  
Cheers Clay