Fixed some compiler warnings and marked OnRedraw as virtual. Oops.
Fixed some compiler warnings and marked OnRedraw as virtual. Oops.

clangen/musikcube,onnerby/musikcube,clangen/musikcube,onnerby/musikcube,clangen/musikcube,clangen/musikcube,clangen/musikcube,clangen/musikcube,clangen/musikcube,onnerby/musikcube,onnerby/musikcube,onnerby/musikcube,clangen/musikcube