I’m using a Raspberry Pi 3 with a Hifiberry Amp+. Speakers are connected, connected to wi-fi everything seems to be connected correctly, but no music is playing. I’ve entered my spotify details into the Add-on, Spotify identifies the Pi in connect to a device, but when I press play no music starts, the play icon doesn’t change to a pause icon and I can’t change tracks. It seems to me that I’m missing an add-on or a setting at some point, or something is clashing.
In the Hifiberry add-on page the output device is set to default – snd_rpi_hifiberry_amp,- Defa.
Which Spotify plugin are you using? Our own Spotify Connect plugin or the spotty plugin for the Squeezebox Server? Both have been the subject of a lot of discussion already, you might be able to find some hints in the topics: