Thanks, this has been really helpful.
If I've got it right, my current set-up - MacBook Pro to Audiolab 8200CD, connected by a USB cable, does the basics of what a separate streamer would do? And a Chromecast Audio does the same job for about 30 quid? Or I can spend £3k on a Linn streamer. Presumably there are significant improvements soundwise the more you spend?
Some of you have mentioned ripping CDs and storing files, don't think I need that. While storing my LP and CD collection takes up most of a back bedroom, I'm not (yet) ready to let go of the hard copies of my music collection. With Spotify I have a further 700 albums saved online, as long as I keep up the subscription.
Adding a streamer to my set-up means another box on the equipment rack. Would you say that one of the main benefits of getting a streamer would mean saving all that space used storing albums and CDs, and that it's a more convenient way of listening to music?
At this point I'm not sure it's for me but you've given me something to think about, I shall explore some more. Really appreciate your help.