The downside to downloaded music is it is not the same quality as a CD or even old Vinyl LP. Data is dropped off IOW loss. Amazon and other download services download to you compressed MP3 format instead of ripping a full CD to your computer. Most times you may not notice a difference but if it falls below 200KBPS you'll hear a huge quality difference kinda like Youtube.
Another thing you have to watch closely is the download service retaining rights and control. Back when MS Windows media player had the MS Music Store I downloaded about $100 worth of music. Well they shut down and the ability to play it wasn't renewed. IOW you were renting it. But I didn't have that issue with Amazon but I don't use Amazons Downloader I download direct into my computer when I buy a download from them.
