Usually audio is over standard Bluetooth - not Bluetooth LE. Nordic do have some examples of audio over Bluetooth 5 (which is faster) but it's not hifi audio or anything.
Realistically I've only seen low-res images sent over BLE (for instance the Parrot Rolling Spider drone).
I'm not sure I understand about that stuff you posted - are those modules any different to the things I use for Puck.js?
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Usually audio is over standard Bluetooth - not Bluetooth LE. Nordic do have some examples of audio over Bluetooth 5 (which is faster) but it's not hifi audio or anything.
Realistically I've only seen low-res images sent over BLE (for instance the Parrot Rolling Spider drone).
I'm not sure I understand about that stuff you posted - are those modules any different to the things I use for Puck.js?