Cell Renderer Problem

Hi,

I have a problem. I have two columns in a datagrid. One for song title and the other for Play/Stop button.

When I press the Play button in a particular row, it changes into Stop button as the song plays.

My problem is when I click on some other Play button in another row, I want the previous button that was pressed, to change its state to “Play”.

At present, as I go on pressing Play button in different rows, their state changes to stop, but i want the state of the currently selected button only to change to Stop, rest all should revert to original.

Thanks

Anwar