Why is including radio support a bad thing? You can buy a portable radio these days for like $5, and that duplicates a lot of stuff that the iPod already has, like an amplifier and headphone jack, a case, power supply, etc. The actual radio hardware probably costs like $1.50, which is irrelevant when talking about a several hundred dollar device. So I can't imagine that cost is your issue.
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Bitt Faulk