iMac with spotify playing music on an external sound device (Beoplay speaker). The sound device has been connected via the "Connect to a device" button located bottom-right in next to the spotify volume control in the MacOSX spotify application.
When the spotify application is playing music I can use the <previous>, <play/pause>, and <next> buttons located top-right on the apple keyboard to control music playback in spotify. That is fine.
The apple keyboard buttons <mute/unmute>, <volume down>, <volume up> however, appears to be locked to control the internal speaker and does not affect the sound playing on the external sound device.
I realize that the keyboard shortcuts <cmd+up> and <cmd+down> exists to control the volume in spotify, which will in turn control the sound level on the external sound device.
The <cmd+up> and <cmd+down> keyboard shortcuts come with a few shortcomings:
It would be much better usability to be able to bind the designated apple keyboard volume keys to control the spotify volume.
Has anyone figured out how to do this?