How do I get this iTunes song on an Android device?

I want to buy this song , but it appears it's only offered on iTunes. I have no idea if it's DRM protected or not, I just want it on my Moto X. * What are the most direct and straigtforward steps to determine *if* I can put this song on my device, and how I can do it? I would like to purchase the song directly from my phone, but I have both a PC and a Mac