I'm trying to transfer all the music from my desktop PC running on XP to add to my laptop running on Windows 7.  I copied the music to a WD external drive hoping to download the data to my laptop without trouble. I thought all I had to do was drag the new music to the laptop's SkyDrive to get more music onto my Nokia Lumia 920, running on WP 8. However, I got many, many problems. For instance, the albums didn't download as a whole document, instead I've songs and artists all over the place together with art and a desktop icon in multiple different files.

So my question is simple: IF I erase all the music I have today in my laptop's My Music folder, would I be able to start from scratch using the data today on SkyDrive that's there from before? (Do I need to tell anyone I'm not tech-savvy or does my awkward presentation betray me?)