The 60Gb iPod will do exactly what your current idea calls for.
Not sure that there is a device that will attach to your USB HD and play the MP3's through the amp
I have an external USB2.0 HDD attached to my laptop, on to which I downloaded my entire CD-library. Now, I'd like to play this music through my amplifier, but would like to bypass my computer from the loop. Is there a device, which could able me to hook up the external HDD (in)directly to my amp without having to use the computer inbetween?
My only current idea is buying a separate MP3 player with enough capacity and a convenient docking station, which could be hooked up to my amp.
Any ideas and comments welcome.