Choose which song you want to play by clicking on it. Use the slider to set the volume. Loop continuously loops all songs in order. Stop All stops all sounds and the loop. Stop Loop stops the loop and lets the current song finish. All of these songs are by me, changed into different instruments by GarageBand.
Hope this works for you. :-) I may make more seasonal music players soon, once I finish this! (Pro Tip: press Loop while playing a song to loop only that song.) Double-click if anything doesn't work the first time. Please report bugs in the comments if any occur or the status doesn't read correctly and that happens more than once!
