Waiting to download Local files onto smartphone....

[Orangesplay]

Hi. So all I'm trying to do is add music from my pc onto my spotify and be able to listen to on my Galaxy S5. I've done everything right, followed all the how-to's. The only problem now is that when I attempt to download the music to make it available offline on my phone. It just sits there, saying waiting to download... I've tried restarting everything, deleting and adding, all of it. Anybody know whats going on???