I could not play a local file on my PC. I had my Android phone on the same WiFi connection and even had them connected together via Spotify's device connect. I DID see the song however it was greyed out. I play it and when i tried just said "this song is not available". I SOLVED this by uninstalling Spotify on my phone and reinstalling. It worked immediately then! I did open the firewall to Spotify as well. You SHOULD NOT TURN OFF YOUR FIREWALL! Instead you can just go to the "cortana bar" in your Windows task bar. Type in "firewall" then choose "Allow an APP through windows firewall" click the "change settings" button with the "administrator shield" next to it. Then find Spotify in the selection box. Click the boxes next to it to allow it through the firewall. THEN just for good measure click the "details" box. Then click "network types" and make sure they are both checked. You would think these boxes are linked to the scroll window since they do the SAME thing. For me they were'nt.... Totally stupid haha Hope this helps someone!!