Niku,
Voice licenses are available at:
http://store.cepstral.com
For help registering these voices with their license keys on a Mac, this page should be helpful:
http://cepstral.com/cgi-bin/support?pag ... x#enterkey
I'm sorry for any inconvenience the delay in response has caused you. Please note that this is a community forum and we at Cepstral do not constantly monitor these pages.
In the future, if you require immediate assistance from Cepstral please feel free to contact us through our ticketing system at:
http://support.cepstral.com
Thanks for using our voices!
-Alex