go to mozilla.com
and download video download helper, install it(don't worry, no viruses in it)
when it is installed start one of the songs playing, and at this time there will be 3 balls(red,yellow,blue) together in some sort spinning next to the address bar, click on the down arrow to the right of them and click the option that corresponds with the name of the song you want.
to install firefox (link)
to install download helper (link)
(the green words are links, and I will check back on this thread later if you have any questions)