I don't know if this will work for everyone, but the steps I took were:
I went to "start" and clicked on that - then I clicked on "All Programs" - click on "System Recovery" - click on "Application & Driver Recovery". Then I looked for something that had audio driver listed in it. Mine happened to be "Sigmatel Audio Driver 9200 v5.10.5082.0". I clicked on that, then I clicked on install. I am now getting sound with no problems. I can play my music and here the computer tones.