1. Find some art you like.
2. Click the title of the art to open the submission page for that art. (clicking on the "play" button for music or sound effects will allow you to listen to a preview of the audio, but you will have to click the title to open the submission page. See screenshot below)
3. Once on the submission page (for example, here) scroll down below the preview to where it says File(s): 
4. click the file link right below that.

can you provide a link to the page you're looking at that does not have the "File(s)" section?