That's good advice, unfortunately in today's fast paced, sound byte news they left out a critical point.
When out in public ditch those trademark white ear buds for anything else. Nothing screams I've got a $300+ music player and come and get it like those do.
And if you want to go to extreme lengths, you should always carry an old media player along with your iPod so you can hand that over when / if mugged. Because we all have a few of those lying around. Think of it as recycling .