i am developing a an application using java/j2ee .its just like a
media player.its job is to do the following.....
1.display the songs based on their ratings(* ratings...1 to 5)
2.search any song by its name
3.for above mentioned steps, the project is working...that is it
displays a list of songs based on its ratings(step 1)and also it
displays a list of songs based on searching (step 2)

The problem i am facing is......

once the list is displayed, and if i click on any song, IT MUST PLAY.
BUT THIS IS NOT HAPPENING. PLZ GIVE A SOLUTION..that is what should be
done to play the song(either audio or video).(i heard about
JavaSoundApi----> but i dont know how to implement them)

another problem.....the user must be capable to change the ratings of
a song....this is also not working....