Why Is There A Green Dot On My Computer What Is The Best Free Music Downloading Program?

What is the best free music downloading program? - why is there a green dot on my computer

Ok, I've deleted some of my music files and screwed up. All CDs are still there, but all other songs are gone ... If I am angry and deleted pursue my music from my computer after trying for hours to retrieve it and decided the way to download. I want a legal framework (free or not, I do not really care), which is usually on my hard drive and send me the lite is Avast! in an attack. Please tell me why you think this program is the best. Preferably, one that has no spyware, etc. .... There is also a way to the title of viruses before downloading (red / green, good / bad number or something next )..... check