I also really like the Now Playing. It's such a simple thing, but the cool factor is really large.
I forgot to mention the front facing portrait mode.. That blows people's minds.
Get the "Now Playing History" app. It will complete your life.
I'm digging so many features, it's hard for me to pick one.
i guess the active edge, I use that all the time. But if you ask me again I might pick a different one.
I enabled now playing but so far nothing does anything
It has to have heard a song that's in its database. Remember, this is not going out onto the Internet to try to find out what the song is, it's all done with an onboard database.
BTW, you can use assistant to find out what a song is like you would use Shazam or SoundHound...