They certainly were blatant in their lifting of material directly from the US Phatnoise site and liberally using the Phatnoise name. Either they are very brave (and stupid), or they are a sanctioned arm of Phatnoise.
Considering that HK just paid money for Phatnoise, I doubt that they would let this kind of activity stand unless they were a part of it.
On the flip side, the domain is registered to "New Age Marketing", through TuCows. I strongly doubt that they are legitimate partners with HK.