Open Source MP3
MPEG, audio player 3, Layer 3 is one of three coding schemes (layer 1, layer 2 and layer 3) for the compression of audio signals. MP3 files are small in size, so it is popular among the people and it can easily be transferred across the Internet. There are many Open Source MP3 Software available free to download and use its source code.
More Resources: Open Source MP3.