Q: I’ve purchased a lot of music from iTunes over the years, going back almost to the day the iTunes Store first opened. A lot of my stuff is in the older DRM’ed format from before iTunes started selling DRM-free music. Now I hear that I can take advantage of the new iCloud features to upgrade my older music and make it DRM-free, but the whole thing has me a bit confused. Can I just convert stuff through iTunes in the Cloud? Do I need…