Forvo - Forvo: the largest word pronunciation dictionary in the world, now with translations.
Howjsay - Pronounce words correctly with the world’s largest English pronouncing dictionary.
Shtooka - The Shtooka Project is a multilingual database of audio recordings of words and sentences.
Lingua Libre - Lingua Libre is an online pronunciation dictionary application.
HowToPronounce - HowToPronounce.com is a crowdsourced audio pronunciation website that helps you learn how to say words, names and phrases contributed by native speakers.
Lingro - Import a text in the language you're learning and look up words.