Cited as a reference · for some experience
Wireless Digital Audio Streaming Realtime with Arduino and an NRF24 Module
Why people recommend it
Linked as an example of sending digitised audio between Arduino boards over cheap nRF24L01 2.4GHz radio modules.
Watch for: Example of what the modules can do rather than a step by step guide
In their words
If so, it seems that issue can be overcome with some clever programming (see video: [video]).
lostinthecloud on electronics.stackexchange.com, Apr 2018. CC BY-SA.