How can I gain access to OneDrive on my Lumia 630?

Please help! I've spent hours trying to find a solution to this! I have a Nokia Lumia 630, which I adore. I want to be able to listen to music stored on OneDrive, how the heck do I it please?! Thank you

Find OneDrive on your apps list (on right side) if you haven't pinned it yet. Then find that music. Simple.
Your phone must be connected to internet, data/wifi (in case you missed that)

Thank you for answering AV2RY. I've done this but I keep getting the following message: 'Sorry, we can't play this file on your phone', I'm not usually stumped but this is really getting to me!