Clever, he is

You have to love the singlemindedness of 10-year-old boys... voicemail from my son.

I also have to add a plug for the excellent - and free! - WavePad and Switch tools from NCH Swift Sound. I used them to edit and convert the cellphone audio I recorded on the Mac (long story involving a cheap but capable Dell Inspiron 1501 notebook without a built-in microphone).

Sadly, the excellent Syntrillium CoolEdit Pro is no longer around, having been folded into Adobe Audition.