I still buy CDs occasionally; I rip them as ALACs and then back them up to a hard drive. I also buy ALAC files from Qobuz. Either way, I down-convert the ALAC files to iTunes + for playback on my phone and computer. On my 27" 2012 iMac, the conversion from ALAC to AAC would happen at 99x speed. Encoding seems to top out at 16x on my Mac Studio. As a test, I re-encoded the same ALACs on my 2012 Mac mini. They encoded at 60x speed. I realize that ripping CDs is a thing of the past, but why would ten year old computers be blowing the doors of "the latest and greatest" on such a mundane task?