Are you trying to use the 3D or no? Last I checked 1.4 was backwards compatible with 1.3. It should work like a standard set up as long as you're not using the 3D ability on your TV.
If you're trying to use the 3D still on the TV, I don't believe you'll be able to get anything out of your receiver. You could try running separate audio from either the TV or the source to the receiver. I don't know if that would work, someone with more experience with 3D will have to answer that.