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So you just got home, thirsty to watch today's keynote without the streaming issues of this morning, but you use Linux and hate safari?
Fear not, here's how to watch it using VLC:
vlc --ffmpeg-threads=1 'http://p.events-delivery.apple.com.edgesuite.net/14pijnadfpvkjnfvpijhabdfvpijbadfv09/m3u8/sl_vod_mvp.m3u8'
Thanks Chan-Ho Suh on AskUbuntu@StackExchange.