Kagu has this great feature that it stops playing the music when headphones are detached, and starts again when you plug them in. I'd really like to see it in Canola too.

It's quite logical that when ever I have the media player running and I plug in the phones, I want to listen to some music, and if I pull them out I'm not listening any more. It makes using the player a lot easier, because now instead of just plugging / unplugging I have to
-get the device out of the pocket
(-flip the case open)
-open the screen lock
-start/stop the playback
-lock the screen
(-close the case)
-put the device back into pocket