There are lots of DVRs out there, including freeware software that
runs on Linux boxes. (BTW, TiVo and Dish Network boxes are Linux
boxes -- TiVo at one point was pretty open about how to get to the
innards of their system.)
You don't have to be married to the cable/TiVo DVRs.
....and so it will also be with radio, if anyone cares enough at this
point. I personally don't think they'll care any more -- specific
program listening will come through podcasts, and word of new media
will spread via web pages, usenet and other BBS-like systems.
When you can drop 100 hours onto a Flash card and put it in your
portable MP3 player... no one cares or needs radio for entertainment
any more.
--
Eric F. Richards,
"It's the Din of iBiquity." -- Frank Dresser