Better Records Mod 1.7.10, 1.7.2 adds the ability to download your favorite songs from the internet directly into your game, for all your friends to hear! And with no exiting of Minecraft to do so! Just input the URL to the song, and it'll download automatically!

The currently supported formats are ogg, mp3, and wav. Though, I highly recommend ogg because it is smaller and there is a default of 10mb download limit for songs.