For safety sake, download music only from sites you know and trust. This will ensure that the song doesn't have some sort of virus in it which can leave your computer a mess or your private data open to criminals. Stick to sites like Amazon or iTunes who scan the files they provide.
If you have, or want to have, a massive MP3 library, store it on the iCloud. This allows you access to all of your songs from any device logged into iTunes. While you can't play music without an internet connection, you also don't have to wait for songs to download and clog up your device.
Your computer needs to be protected with anti-virus software prior to downloading music. It is deceptively simple to get a nasty virus along with your song. Before your song is even downloaded to your hard drive, the anti-virus program can scan the file for malware. Even scan after the fact so you can sweep up anything that didn't get caught the first time.
Any website that offers legal music downloads will have a copyright notice somewhere on their site. This notice will show that the site's owners are authorized to sell and distribute the music legally online. This notice should also tell you what you are and are not allowed to do with the music after you purchase.
If you're downloading music online, it's critical that you have up-to-date virus protection. It is very easy to download with the song a virus. The anti-virus program scans downloads for malware prior to being saved on your computer. Additionally, your anti-virus program will scan the download and remove renegade malware.
Did you know that The Internet Archive doesn't just archive websites? It has archived a substantial selection of free, downloadable songs as well. They wish to archive everything online, and you can benefit from this hard work. Make certain you back up your library on iTunes often. Your hard drive could crash at any time, causing you to lose your settings. You can also install the music you have on iTunes easily if Sexy Jazz-R&B MV by korean-girl
having a backup disk ready.