I did a little searching and it looks like there is a way to import your Apple playlists into Qobuz:
a one month subscription to Soundiiz
I would get a streaming device without a built in DAC and use the DAC in your McIntosh. Then down the road you start trying other DACs. I've used the devices from Small Green Computer (Sonore) but they are not cheap. https://www.sonore.us/ultraRendu.html ($899 without power supply)