A player worthy of Doc Frankenstein. XM's newest offering makes sure you never miss your favorite broadcasts; the XMp3 can record up to five stations at once. But the recording multiple channels concurrently feature pales in comparison to its Tivo-like brain. It notes which stations you listen to most and records them at least once a day.
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In our December issue, Popular Science names the 100 best innovations of the year: bombproof wallpaper, self-parking cars, the fastest helicopter, and 97 more. Plus inventor profiles and videos.
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