First of all please make sure your speakers are switched on, plugged into the right audio jack and are not mute.
If the above is all ok, try to play any audio file in your computer to check if you can hear it. If you are still unable to hear the sound, it probably is a problem with your computer's setting or hardware.
If you hear the sound from local audio file on your computer but are still unable to listen to songs on this website. Please get in touch using "Contact Us".