Today everything from videos to audio files are easily available online and also in MP3 format. Many online stores and websites are in the business of selling music online. All the bestselling music albums of all famous singers are easily available for purchase online. You can select your choice of music album or song and can easily download and purchase online. One of the most popular online music stores is the legalsound.com store. It is based mainly in Russia but serves to all the people worldwide. It is also having the function of automatically downloading and archiving the songs purchased by you in the MP3 format.