Hi

One of my players in my group is a Smuggler/Soundrel and after he buy´ Force-sensitive emergent, can he then buy into the Force and Destiny talent trees?

With Force and Destiny careers, it's a case of the following: If chosen as their first career, the player gains Force Rating 1 along with the accompanying career skills/access to talents.

If a player wants to go from, say, an edge career into a Force and Destiny career they need to gain a force rating which is supplied by picking up Force Sensitive Exile or Emergent (And the new Padawan Survivor from Dawn of Rebellion).

So, in short, Yes, you are correct. That is how it works.

Just remember two things: 1) This is going to be a very EXP expensive build in the long run and 2) Make sure the player makes a note of the Force Rating Requirements on Force Powers they want to purchase.