Thanks Tony - looks like I'm up for a bunch of re-ripping then. Gives me a chance to go up to 128kbps, I suppose!

Incidentally, I can't post to this forum unless I disable my firewall - Norton Internet Security. I get the following message:
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We cannot proceed.
We encountered a problem. The reason reported was:
The host you are trying to send the input from is not a valid host.
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Wierd