>May I suggest that you add a button to test this sound. On more than one PC I use daily, the sound is very different when I receive a message, than when I double click the wave file from my HD. As I mentioned earlier, the message should be "you've got mail", if I remember correctly. But the sound I hear, is more like "goodbye".
In the account page, there is a section now for Audio notification. In it, there is the ability to test those audio notifications:
http://www.levelextreme.com/DataEntryMemberUpdate.aspx