There are three buttons, the title field, and a volume control. The buttons operate in the usual way, except that clicking the play button (|>) while a tune is playing will restart from the last pause position, or the beginning if the pause button (||) or the title hasn't been clicked. Clicking the stop button () will stop the playing, and reset the pause position and the loop position. Clicking on the title field will replay the tune from the clicked position, and set a new pause position.
Clicking on the title field with the shift key pressed will set a loop position. The tune will replay from the pause position, or the beginning, when the loop position is reached. If the loop position is after the current position the tune will replay immediately. If the title field is clicked at a position after the loop position, the tune will play to the end, and reset the loop position.
Clicking on the volume control will set the volume in proportion to where it is clicked.