Random Button

hi guys

can any one help me? ok. i had a project in my software design. it is “music games quiz” this is the scenario… the music is random.(its working now) but my button (as 4 chooses) is the problem now. why? my question is, how the button would be random? so when the music is playing the button of the correct answer must be there also. getting my point guys?

pls help me. i neet to finish it before sept.15,2010
:((