sound (audio) problems

[Tom Robinson]

I have developed a language program that plays sound files (.wav).  
After I updated to 2.7.3, the sound files would not play. I did not  
modify any script related to the files. The dataPath is set properly  
and the files are stored in the proper folder. If I click on  
individual sound files outside of Revolution, they work fine so the  
audio problem is with Revolution and not with the computer. I have  
reinstalled Revolution but the problem remains. Most strange, the  
sound files in a standalone built months ago for another program no  
longer work.