I think this is a great app, I really don't know what it does to it's full capacity, but I do now have my music on my phone which I have never had the patience to do before. I was a dedicated BlackBerry user until I found Droid! This is one of the very first apps my hubby told me to get. I LOVE having my music on my phone. I am so glad I have a Droid now! I use this app almost daily and now hook my phone up to my car instead of my iPod. So much easier carrying one thing around. I am now apple free!