Looking at the audio format, I learned about Ogg Opus , the successor of Vorbis. I was impressed with the sound quality at lower bitrate and the fact it uses much lower latency suitable for realtime streamer and VOip. The fact Opus is the audio standard prompted to slowly convert some of music collection I have. Reading Auphonic website about the comparison against MP3 , the sound quality is even noticeable meaning it is very usable online. I will see Opus use in much broader audience, its patent-free advantage is a welcome change toward audio industry especially mobile devices. I hope upstream will switch to that format.