Here are assorted links that might be of value to you.

Ear training sites:
a listing of resources
for developing perfect pitch, login and account required (free)

Ear training programs for purchase:

Practica Music


MusicalEar (free demo for 15 days:

(and many more... search for the ones above online, or order from a music retailer)

Other sites:
the site of my teacher, Marianne Ploger, who is the source of the 21-note series