rearrange buttons
add 'absolut_untriumphal.mp3' to buttonGroup 'Bill & Ted'
add new buttonGroup 'Kein Pardon' to tab 'Filmzitate #2'
add 'ned_arbeide.mp3' and 'raus.mp3' to buttonGroup 'Kein Pardon'
add 'super_ingo1.mp3', 'standup_metal.mp3' and 'bugbusters_theme.mp3' to buttonBroup 'Sonstiges' on tab 'B-Seiten'