First off, welcome to the site.
This forum is mainly for requesting songs that aren't already in the subsonic library (as in "It'd be neat if someone could upload (whatever)"). The two you're asking about there are definitely already in the library. You can search through what's already available
here.
If you want to actually get the songs to play, you can do that from that list I linked too. If the 'next available' column has a green 'now' in it, and you have enough points for the request; just click the now and you're good to go. Make sure you have one of the request streams playing first though, or you might miss it. The links to the different streams as well as the requests and stuff are on the left hand menu on the main page. The points system is explained over
here.
Sometimes if you're lucky/polite, and pop into the chat, an admin will queue up a special request for you too.
Enjoy!