With the correct type of adaptor you will be able to convert analogue audio via Bluetooth to a digital signal. This is useful if you have a device such as an old tape player or vinyl deck, and want to transmit the audio from it to a Bluetooth speaker. The process is very simple, but it does require a Bluetooth analogue audio adaptor. Bluetooth typically works at a distance of up to 30 feet. You will need to be familiar with your send Bluetooth device for this to work.
Plug your Bluetooth analogue audio adaptor into the audio output of your analogue device.
Switch on the Bluetooth device that you wish to connect to.
Press the button on your analogue audio adaptor. This will start the adaptor, and set the mode to discoverable.
Make your second device discoverable, and wait for the devices to pair. You will now have converted audio to Bluetooth.