Where are music codes used?

While Googling for some song lyrics I found a really great site that not only had all the songs I wanted, but also has lists of tracks for all the artists; what's more, they seem to be the original tracks. Some of these go back 30+ years, so I've been enjoying my trip down memory lane back to my hippie adolescence. I noticed that each track page also gives two kinds of HTML music codes - with and without Auto Start - that can be copied and pasted. To where? Where would these codes be used? I'm trying to figure out if there's any way to be able to use these codes to help me download some of the tracks onto my computer. (I'm ashamed to say I'm one of the three people in the world who still does not own an mp3 player, nor have I even downloaded ringtones to my cell phone). I'm not completely computer-illiterate, just mostly music- and gadget-illiterate.

The site doesn't even require signup or password, so it truly is a gem, but I'd enjoy it so much more if I were able to download the tracks, either to the computer or the mp3 player that I'm going to break down and buy very soon. And btw, right-clicking on the track's hyperlink doesn't give the ability to save it, in the way I do when I want to save a photo I see on a site.

Any help would be greatly appreciated.