Ogg Vorbis Presentation for. How many have heard of MP3 file format? How many have downloaded, traded, ripped, burned, listened to MP3s? - ppt download
Why does Spotify use the relatively obscure Ogg Vorbis file format? - Quora
MP3 vs AAC vs OGG: A Simple Quantitative Comparison | AnandTech Forums: Technology, Hardware, Software, and Deals
OGG Vorbis VS MP3: Which Audio Format Should You Choose