I want to use SWFObject to play musics. These musics are in swf format (only sound). I want to make a play button. When user click on the play button the associated music will start. At this moment I want to change the Play button with Stop button. When the music finish I want to change the button back to play one.
This is purely a flash realated issue (not swfobejct). You need to code all this within a swf audio player file. A general flash realted forum would be you best bet, or look for a pre built audio player which someone has already built.