We got dd a i-teddy (which is an mp3 player in a teggy bear) for her third birthday as i remembered having a tape player as a toddler, but nothing is on tape anymore. It has music on (nursery rhymes and tumble tots cd uploaded) has the facility for games and tv but we dont use that.
I would have thought the ones you linked to would be for 4/5 yr olds?
whenever you think your dc would get the concept of controlling music, really. and of course, it depends on how interested in music/operating one your dc would be.
dd1 had a tape deck with an adapted switch from when she was 2 (SN, hence the need for adapted switch).
she now has an mp3 with a couple fo different speaker systems. one is a teddy (pop mp3 into pouch in the back, controls in teddy's paws) and another is a speaker deck for my old iPod. hold on and I'll see if I can find either of them...
DS had a child friendly one with a volume inhibiter from 4 I think as he wanted an ipod likes dads . He's after an upgrade now he nearly as likes watching the music videos. The FP/Mickey one may be quickly outgrown depending on the age of your little one.
Ours was red/yellow and wont age as easily but I cant see it on Amazon anymore to link you too.