Help me waste time on the internet

[thymidinekinase]

So, I am doing an internet puzzle-riddle-thing. I could look for spoilers, but I am being virtuous and only asking for technical help. There is a 10-second sound clip that makes no sense, but there have been enough Beatles references that I wonder if I should try playing it backward. Can someone tell me how to reverse an MP3 on a not-very-souped-up

Comments

[thymidinekinase]

Nevermind. Sourceforge had a download called "Audacity". It does the trick.

[mundungus42]

Yes, Audacity is AMAZING! So what was the Beatles refernce?

[thymidinekinase]

A filename on an earlier clue is: paulisdead.htm. There is a directory name called sdrawkcab. Also there is a reference to Imagine. The address if you're interested is The Hardest Riddle Available on the Internet (http://deathball.net/notpron/).