Redirect the title field of a content type to some external url in a view
To change content link... You can try using Views Conditional Module... 

Project page says


  Views Conditional is a simple module that allows you to define
  conditionals (if xxx then yyy) with fields in views. Conditions
  include:
  
  Equal To
  
  Not Equal To
  
  Greater Than
  
  Less Than
  
  Empty
  
  Not Empty
  
  Views conditional allows you to output text based on the result of the
  condition.


If it doesn't work then you can solve it using views php module..