Pronuniciation of English Sounds

Here is a great application from the BBC Learning English website. It is a pronunciation chart that says the sounds when you click on them. You can download a PC or a Mac version.

But there is something strange about the chart. What are these weird symbols? You may have noticed them in a dictionary. e.g. Cat=

You should learn how these symbols represent a sound in English. Here is a good description from antimoon.com

A good dictionary must give phonetic transcription for every word. Phonetic transcription tells you how to pronounce a word. Ideally, the transcription should be based on the International Phonetic Alphabet (IPA), which is the standard phonetic alphabet used by linguists all over the world. Here is what IPA-based phonetic transcription looks like:

Here, the phonetic transcription is marked in yellow. It tells you that image is pronounced like this. (sound recording requires Flash)