Two interesting bugs on 1.28 I haven't seen mentioned that have to do with the song selector (works on Premium/LE, probably Pro, too):
We can now reproduce the song selection bug every time. If you launch the ball slowly and then press and hold the right flipper just before or right as it hits either the first orbit switch or the spinner (if it doesn’t make it around at launch), it will advance the song you’re hearing to the NEXT song while your shots are the ones that correspond to the song that was displayed when you launched the ball. They’re completely mismatched for that whole ball or until you complete that song's mode. (For example, you can be playing Deuce's shots with Black Diamond's music with this bug. Basically play one song's mode with the music of the NEXT song playing - it worked with all the songs we tried it on.)
Also, another bug is that if you are pressing the flipper buttons rapidly while it’s adding up your end of ball bonus, you can get it to let you CHANGE the song (even though you haven't finished the current song) AND it applies the progress you made on the initial song you didn’t finish. This seems like a bug, too, but maybe a crazy feature?