Hi andajazz,
I suposse that if they are samples, they must be somehow usable in the OT, they might be just improved for the AR.
If you don´t have it yet or didn´t noticed, another option is to use the incredible AK Waveform collection I´ve got for FREE on my website:
http://www.inspektorgadjet.com/item/waveforms-library/
It contains severall waveforms from computer games, retro synths, FM synths and most importantly Commodore 64 (SID) Waveforms, IMHO the results are much interesting and usable than normal Loops, and offers a Huge way of working with the OT as a Synth.
To pint out, check the folders labelled:
AKWF_c604
AKWF_vgame
AKWF_vgamebasic
hope it helps!