If your sound isn't working there is a number of things that could be wrong....
1. Give it a while it takes a while to load (approx 5 mins)
2. Check the speakers are on and the volume is up (hey we all have our bad days)
3. Go into control pannel and check the wav sound level is up or not on mute
4. Check the web address of the sound
5. In awaba go to the options pull down menu then go to the general tab and make sure there is a check in the play sounds boxs bothe wav and midi files (all sounds on here are in wav format)
6. In the same window go to the downloads tab and trying putting a check in the download all audio files