Streaming catalogs change constantly due to licensing agreements. When you download a file, it is yours permanently. You can back it up, move it to different devices, and play it without an internet connection. Hardware Compatibility
If you are looking for the absolute highest fidelity (Classical, Jazz, Acoustic), this site offers multichannel DSD files that mirror the quality of Super Audio CDs (SACDs). 5.1 Surround Music Download
Getting the file is only half the battle; your hardware needs to understand it. move it to different devices