HD music downloads to iPod?

I am using an ipod classic with a wadia i170 transport and a music hall dac 25.2 dac. I have all my cds on the ipod in aiff and it sounds great; but i've been reading about on line downloads of 96/24, 88/24 and even 192/24.
My question is is there any way to get these high rez recordings onto my ipod? From what i've read on the subject there isn't; but maybe someone here knows how.

thanks,
roger