SONY MP3 player fixing

Ok, this is going to be a long thread, so please bear with me for a while.

Basically, I've always been a discman user, but a few weeks ago mine broke down for good. I was looking for some tools yesterday to open it up, and I found my brother's old MP3 player, which had broken down, I don't even remember what the problem was. Being the "open-stuff-up" maniac that I am, I had to open it up.

http://i275.photobucket.com/albums/jj302/GarciLP/mp3open.jpg

http://i275.photobucket.com/albums/jj302/GarciLP/mp3open2.jpg

(That's what I found when I opened them up)

Now, it doesn't say a model number or anything, but I took note of some of the stuf that's in there, namely 2 Samsung K9K4G08U0M, one chip that says ATJ2085P, one that says TEA5767. Pics ahead.

http://i275.photobucket.com/albums/jj302/GarciLP/samsung1.jpg (One of the Samsungs)

http://i275.photobucket.com/albums/jj302/GarciLP/samsung2.jpg (The other one)

http://i275.photobucket.com/albums/jj302/GarciLP/mp3open2marks.jpg (The rest of the parts)

However, what called my attention the most was that upon immediate opening, this thing fell off. I can't figure out quite well what it says, but it's something along the lines of 47648104.

http://i275.photobucket.com/albums/jj302/GarciLP/47648104.jpg (This thing)

http://i275.photobucket.com/albums/jj302/GarciLP/weirdthing.jpg (Right there)

http://i275.photobucket.com/albums/jj302/GarciLP/mp3piece.jpg (Outside of the MP3)

http://i275.photobucket.com/albums/jj302/GarciLP/mp3space.jpg (I guess it goes there)

I'm guessing that's the problem, but I'm not quite sure, can anyone tell me what that piece does and what I should do with it? Solder it up?