Possible to stream Amazon Music using OH2?

Hi all,

I am looking to stream from Amazon Music mainly, although could consider iHeart. Right now i am casting from phone to chromecast audio, and control a Russound receiver zones w/ OH2. There are just too many steps to actually get the stream going in the right zone, right volume and right playlist/radio.

Based on reading, dont think it is possible, but is there anyway to consolidate this all onto OH2, the streaming? I see some use squeezebox, but dont think that does Amazon, and would like to not have another device - would like to try and keep all on the Pi, CCA, and control via phones/tablets.

Any ideas welcome. Thanks