This is a free container audio file. This format allows you to store compressed audio information. Files of this format can be played by any media player that supports OGG, such as Windows and Unix players. It can utilize one of several encoding schemes. The format was developed by Xiph.Org. Its full name is Ogg VorbisAudio.

flac

Free Lossless Audio Codec: a popular free codec

This format stands for an audio file that does not lose sound quality when compressed. The Free Lossless Audio Codec is popular among music lovers who use high-end equipment to listen to music. The advantage of this format is that it does not delete any data from the audio stream. FLAC is supported by most audio players, audio applications, and audio systems. It is a free open-source format. When converting an audio file to the FLAC format, you can save a significant amount of storage space without losing the sound quality.