(Technicalities)
For playing the songs contained herein, we recommend the nifty little MP3 player WinAmp. Of course, that's assuming you're a Windows person. They also have a Mac version if you're that way inclined, which can be got here. If you're not covered by one of those options, you'll have to go searching yourself.
If you'd like to delve a bit deeper into the whole MPEG business and find out how it all works, visit www.mpeg3.org and you'll find all sorts of info, not to mention players, encoders and links to more sites where you get get music. It's worth a look.