an icon is only a picture representing a program that actually PLAYS the music...that is, a link to a place where a program resides. Do you know what program it was? Do you know how to look at the directories and see if the program itself is still there?

Maybe all you need to do is replace the icon/link......if the program is gone, there are literally dozen of programs that will play music...many free ones are better than what you are given with the computer.

If for some reason you do need to replace or reinstall a program, you need to tell the computer where & what it is..(this is called 'associating' the program with the types of music)...otherwise, you'd need to open the program first and ask it to open and play the music.

If you are in Windows, it was 'probably' Windows Media Player being used.....take a look and see if that program is still there.