Hi, I use the Apple Mail application to manage my email account. I recently tried changing the 'new mail' sound to something different. I downloaded a sound from the internet. I went to Preferences > New Mail Sound > Add/Remove and then I added the new sound. When I selected it in the Preferences, it plays fine but when I get a new email, no sound whatsoever. I tried changing it back to the default sound but this stopped working as well now. I tried some of the other sounds as well but no worky. Please help. Thanks.