English interactive phonemic chart  : sound + example 
proposed by the British Council. 

Merriam-Webster : An online dictionary and an online phonetics dictionary

You can also use the Thesaurus (=synonyms dictionary) 

Type the word you want to hear then wait and click on the "speaker". 

Wait for a new window to open and listen. 

Howjsay: A very easy to use phonetics and pronunciation dictionary.