OGG (not hi-res): Sometimes called by its full name, Ogg Vorbis. A lossy, open-source alternative to MP3 and AAC, unrestricted by patents. The file format used (at up to 320kbps) in Spotify streaming.

MP3 files have high compression that ensures ... because you’ve probably listened to OGG files without realising – it’s the most common type of file that Spotify uses, and also its highest ...