Bach Inventions and Sinfonias: Audio files of all Inventions and Sinfonias. Inventions are midi files, which are computer generated files, so it will sound more mechanical. The Sinfonias are audio recordings of live performances.
Composers and Their Music: Great website to learn more about great composers and their music. You can listen to a podcast of the shows, most lasting only about 6 minutes, or listen to just the music, or read about the composer and the music. Other activities include Activity Sheets about each show and fun Games to try.
Listen to Classical Music: A large collection of classical music that you can listen to. Find the piece you're working on and listen to several different artists!
MTNA Website for Kids: Numerous links to kid-friendly websites for performers, music games, music theory, music history and listening.
Music Study Sheets: Find aural midi files and answer sheets to all Music Study Sheets pages.
Theta Music Trainer: Video games format to review and reinforce aural and theory concepts. Free accounts let you play up to first 3 levels. Each game has 20 levels and Master's Challenge level available with paid subscription.