lol any question is right, to answer yours... I am using Lion. the menubar mob you can get here [link] the media player is called Ecoute, you can get it in the app store. and as for the 'square folders' i am not sure what you are referring to? the docks on the side are Dragthing..
ah, Lion, I just downgrade my early 2011 MBP back to SL cause Lion get me much troubles (it's much-much slower than SL, and draining my battery so fast even I did a lot of tweaks that i can found in apple forum...maybe i should upgrade my RAM to 8GB first), gonna miss the gestures, launchpad and mission control T_T
and for the 'square folders', well, i don't know how to call it, but it's on the center of your screen.. everything is square and look so well organizing (even you named it unsystematic ). really love that..