When using the 0.6 betas I could do this: When playing a song, highlight another one and hit "next", the song highlighted started playing.
Now using 0.6 final, doing the same doesn't make the highlighted song to play, but the NEXT one after the highlight. So if I've selected song 666 in the playlist and hit next, foobar starts playing song 667.
The selected song can still be played by pressing "play", but I still would like to have the behaviour from 0.6 betas.