My laptop doesn't have multimedia keyboard so I want to know if there's some way to have hotkeys for next, previous song in noise music player?
I'm using elementary freya.
You can control noise with the following cmd:
dbus-send --print-reply --dest=org.mpris.MediaPlayer2.Noise /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player.XXX
XXX you can put Play, Pause, PlayPause, Next, Previous or Stop
Here you see how you configure a shortcut: https://elementaryos.stackexchange.com/a/370/37