Quote:
But if you hear the joke and decide that it's funny and you want to record it, the joke is past. Can you rewind XM radio to go back and grab it?


The radio recording app would have to be constantly buffering the last few minutes of audio from the tuner, the same way TiVo and the other PVRs do with video. That would of course mean having the hard drive spun up the whole time, but if the hard drive in question was a CF card then that wouldn't matter. Constantly writing to a CF card raises other issues of course...
_________________________
Remind me to change my signature to something more interesting someday