I have been using 2012 MM for years upgraded with 2tb samsung SSD & 16gb of ram & I have 2012 MBP with a 1tb samsung SSD & 16 of ram. Both are old machines but perfectly functional. If you want to stream Apple Music, Amarra Sq+ will stream AM and your ripped iTunes/Music library using Apples remote App. You can use Audirvana with Qobuz or Tidal. Audirvāna allows you play around with bit per perfect play back or you can play around with its numerous up-sampling features. I use DsD conversion to DSD 128 with very good results. USB is the correct connection, especially, if you want to take advantage of the up-sampling. Both the Apple Remote app & Audirvana app will wake the computer and play music if the computer is set to wake for network access in settings. If you want full hi-rez for Apple Music, you would need a monitor and control direct from the computer because airplay only supports cd quality. Amarra has had issues since Apples last ventura update which has created some operational issues so I don't use it at the moment. Good luck.