Hola Pablo!
Well, in fact you can record with iPod from Apple. You must buy an acessory called iTalk.
I like iPods...but they just play songs or videos...no radio stations, no voice recordings. To do this, you must buy separated acessories to plug in.
My mp3 player (Creative Zen 60Gb) plays videos, songs, radio stations, it records my classes (it has an internal microphone), without buying the plug ins.
But, after buying, I recomend you to take a look at these sites, to compare the models you want.
www.ipod.com or
www.apple.comwww.creative.comwww.sonystyle.comwww.philips.comI hope this can help you!
Greetings
Vitor