Digital music will save the planet

A new study conducted by researchers from Carnegie Mellon University, and Stanford University confirms what if we download music we can reduce energy consumption and CO2 emissions compared to shopping at your record store.
The study proove that buying mp3 results in a 40 to 80 percent reduction in energy use and CO2 emissions versus distributiion of CD, and that factors in the energy used to download the files over the Internet.
The research consider 4 different ways of obtaining music, listed from most energy intensive to the least: Buying a CD in-person at a record store, buying a CD online, downloading an album and then burning it to a CD (both with and without a jewel case), and downloading an album and listening to it digitally.
If you walked to the music store instead of driving, that would equal the energy and emissions of downloading and then burning an album to disc, meaning the driving to the store is the worst part of buying music in person. The study show this kind of considerations.
The final result of the study is: Download your music and keep it on your computer or mp3player.