So I just got the Spotify Premium Subscription and I have music on my laptop. All of my local files are playable on my laptop. What I want to do is to stream my local files from my iPhone. So I made a playlist and name it to "iPod" and put all of my local files on that playlist. So when I get on the Spotify on my iPhone 4s (7.0.4), I go to my playlist and I see that a lot of songs are playable to stream but then there are other songs that are dark gray and obviously it is not playable to stream. I tap on it and the message says "Track not synced, if you own the track, you can sync it from your computer." So the thing is, I really dont have much memory on my phone so i rather play music through streaming it. All of my songs are MP3 formats by the way.
Somebody! Anybody! please help me haha.
(I also have a screenshot on my phone in case)