Learning Sound Patterns
An interactive chart of the International Phonetic Alphabet
http://www.phonetics.ucla.edu/course/chapter1/chapter1.html
This interactive chart allows you to click on IPA symbols and hear their corresponding sounds. It includes a number of sounds that are not found in English.
A treasure trove of language recordings
http://archive.phonetics.ucla.edu
The UCLA phonetics lab archive provides recordings from dozens of languages around the world. It’s a great resource for discovering some of the interesting crosslinguistic differences in sound systems.
A short lecture on babies’ sound learning
http://www.ted.com/talks/patricia_kuhl_the_linguistic_genius_of_babies
In this TED Talk, researcher Pat Kuhl discusses the relationship between perceptual narrowing and the sensitive period for language learning.