This small tutorial will show you how to get a direct link to a Newgrounds audio mp3, allowing you to use it in games, stream it, bypass the "download counter" if you don't want to skew it, and avoid having to load the page and ads when listening to a song.
Step 1: Find a song. Pick any song, and go to its page.
Step 2: View the source. "Ctrl + U" is the Firefox link for it, and then a window should open up.
Screenshot
Step 3: Search for ".mp3". Hit "Ctrl + F" and type in ".mp3". It should snap to an area where it says -songname-.mp3. Screenshot
Step 4: Copy that whole link you see there. It should say "filename='link.mp3'". The "Link.mp3" is what you want. Screenshot
Step 5: Close that window, and paste the link into your browser. (Screenshot included)
From there, you can save it, or just stream it on the page, without having to deal with load from ads, or you can save the link, and use it to link to the song directly!