I am on a new HP notebook, windowsxp,aol.

Downloaded Limewire, no prob. When I go to download a song the KB sizes are huge, are they suppose to be so large in number, some like over 10,000kb. It took about 27 mins to download one song, didn't actually finish as it needed more resourses. I'm nervous that I will use all my memory and stuff for a couple of songs. Please advise if I should make any changes, etc on my compter Will really appreciate any help, hope I made sense. I just wanna be cool like my friends who download music! LOL Thanks agan.