TechCrunch reports Sony is stopping production of the (cassette) Walkman after 30 years. While they’re at it, Sony should stop making Blu-ray players too. Love it or hate it, but physical media is over. The signs are everywhere – Netflx is prepping for streaming-only in the US, and Apple is expanding it’s optical-driveless MacBook Air line of laptops, not to mention their keeping DVD drives on their standard MacBooks.