I've been breathing the energy into the point then make the sound when exhaling. This is how it's done on the tape...

You are visualising the energy moving into the point then intensifying the energy on the exhale when making the noise altenating between the the different mantras.

The inhale moves the energy while the exhale intensifies it at that point

At least this is how I interpreted it ? It feels good that way anyway...

I find the tape moves at such a high pace it is hard to follow..