Least expensive way to get Bluetooth on an RCD310 stereo

[Polo Driver]

A swap for a better head unit is out of my price range, is there any way to add basic Bluetooth functionality to the RCD310 unit in my car? I only want to be able to stream music, no need for phone calls.

Something that's better than one of those FM dongles that barely transmits to the radio would be nice.

[ag69]

I only want to be able to stream music, no need for phone calls.

Polo Driver -- since there is no reply and my suggestion may have been tried too but
310 has optional aux, so why dont you try lightning/usbc/aux to aux cable.

[Polo Driver]

I only want to be able to stream music, no need for phone calls.

Polo Driver -- since there is no reply and my suggestion may have been tried too but
310 has optional aux, so why dont you try lightning/usbc/aux to aux cable.

I noticed there's an aux connection in the car, which is great, every car should have had one till Bluetooth was standard, but I was hoping for something a bit more streamlined than that.