2. Why does holding "-" in X3 2nd gen lockscreen mode sometimes takes me to the beginning of the current song?

A: Our players have a 10s detection, such that if the present song has played for less than 10s, pressing "previous" skips directly to the previous song, whereas if you're more than 10s into the current song "previous" would take you back to the beginning of the song.  This behaviour is chosen by design, please do not worry!