> The big benefit of MP3 is the compression, about 10 to 1, so you
> can get about 10 normal audio CD's content in to 1 MP3 CD
> (depending on your compression/quality levels)

Yes, I do that often, 44100Hz  & 320kbps. 2/3 of my players can
do MP3 and, as you say, the quality difference is imperceptible (or
at least I've not found any issues yet) for such drastically smaller
file sizes. I have a bum-bag (fanny-pack) with a 6V SLA and
switcher to put out 3.6V for the CD player. It's great, lasts all day
and I need to take just a couple of MP3 CDs with me. Also, some
long symphonic works are on the long-play SACD format, (eg
Bruckner's 8th is 86 minutes) and as I don't want to take originals
out and can't back up SACD, a 200MB MP3 does the job fine

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