trouble with housing of the game

:( This isnt about the psp itself, but about a game for it. There is a litte metal circle in the center of the disc, and it came out of place on one of mine.
this has been preventing the game from working, and i was just wondering if anybody could help me out. I have disassembled the casing in which it came in, and now i am left with the disc, two halves of casing, the metal disc, and i would like to know if there is any way of making my game playable again.

thx in advance for any help any1 provides.

not bein funny but ave u tried gluin the metal bit in the middle then gluein the case toghter
obviously without gluin the disk

no, i didnt really want to try anything until i got help from someone who know more about that kind of thing, but if you think that'll work, i'll try it.
thx for the help!

What about bringing it back to the shop you bought it? There should be warranty.