Xbox music sync issues

Hi Guys, I have a win 8 laptop and a windows phone. I am trying to figure out how to sync the music app on both of them. I have an xbox music pass, and I generally tend to download songs and albums on my phone. However these songs never show up on my windows 8 pc but when I download them on my pc, they show up on my phone. How do I fix this problem ?? I just want to make sure I download anywhere and it shows up on all my devices including my xbox.