I don't know if anyone has posted about this yet, but I found what seems like a bug with RWing a track. Let's say your playing the first of two tracks in your playlist when you skip to the second using the forward button. Right after, say you want to RW soon after that second track start playing (say half a second after). When I do this, and hold the back button, it just sits there and keeps playing, but when I let go it just goes to the beginning of track 2 instead of RWing. The reason I'm doing this is because I want to RW into the end of the previous track. Worked fine in b3 from what I remember...