I'm not sure of the details, but I think the Sonos can receive Bluetooth Signals, and there are a few Bluetooth Turntables out there. Yamaha makes one but I know there are others, rare, but they are definitely out there.
The underlying question is, does the PLAY:5 have an AUX inputs? That I can tell it does not. So I'm not sure how you connect a Turntable to it. Other than the suggested Bluetooth, which assumes that the PLAY:5 has Bluetooth capability.
If the PLAY5 does have an AUX input, then you just need to make sure the signal going in is
Line Level, and not directly from the Turntable. If the Turntable has a built in
Phono Equalization Pre-Amp, then that solves that problem. If it does not have a Phono Equalization Pre-Amp, then you will have to buy an external Pre-Amp, which need not be exceptionally expensive -
P
roject Phono Box MM Phono Pre-Amp - £60 -
Project PHONO BOX MM
Checking with SONOS via Chat, the PLAY5 does NOT have Bluetooth.
The SONOS website implies that it has a AUX in, but looking at the photos I couldn't see it.
Steve/bluewizard