Recordings--several hours of music free for downloading or online listening: classical piano, children's songs, original compositions (classical, ambient, electronic) by Brent Hugh
EarTest--a shareware eartraining program designed to improved perfect pitch AND relative pitch
Teaching Young People to Be Musical--simple but specific suggestions to parents and teachers of young people, to help them develop their native music abilities (based on my doctoral research)
EarTestonline--a simplified, online version of the EarTest software (free)