I always had some songs thad I liked but spotify did not have them in their system. So I always import the track from my pc, I have a premeum account. And when I connected my phone to my pc the songs sync on my phone too. But now that doesn't work anymore, I can play the songs on my pc but I can't find any way to play the songs on my phone I tried evrything. I keep getting the message "this track is not availeble". How do I get my songs on my mobile version of spotify?