I noticed. The MP3 patents expired in 2017. https://www.iis.fraunhofer.de/en/ff/amm/consumer-electronics/mp3.html https://www.iis.fraunhofer.de/en/ff/amm/consu

I noticed. The MP3 patents expired in 2017. https://www.iis.fraunhofer.de/en/ff/amm/consumer-electronics/mp3.html https://www.iis.fraunhofer.de/en/ff/amm/consumer-electronics...