I'm still using squeezebox and really like the original hardware, plus home made receivers using pi's; it's a fully open source media system - something that doesn't seem to exist in today's landscape of vendor lock in.

Nonetheless, it's showing its age somewhat, and is harder to get streaming services working on it (e.g. YouTube, play music) in part due to its open nature (also, it's written in Perl...)

Have you ever used the grouped rooms feature mentioned in that reddit comment? Seems pretty cool.

No, but now that I've seen it I'll be trying it out :)

Never discount the simplicity and reliability of a (legal) low power FM transmitter.

I attempted using an FM transmitter but I had 2 issues

1) I think my transmitter was a little noisy so that wasn’t desirable.

2) I didn’t have a nice FM receiver to test with, but didn’t want to purchase one because I thought my transmitter was noisy. So a bit of a catch 22.

But FM would be great.

Where can you get/make one with decent audio quality and stable frequency?