When starting from a command line switch Foobar should respect the switch command. Currently it just goes to the first track in the playlist and begins playing (bug w/586). The previous behavior (58c) was that it would go to the last track played and begin playing.
So...
/Stop should start FB at the last track Stopped
/Start should start FB at the last track and begin playing
/Next should start FB at the last track+1 and begin playing
and so on
Again, this only refers to starting the program from a non-running state using a switch. When using a switch command on a running instance of FB they perform as expected.