Before using an AUX cable to play music on two Soundcore Flare speakers, please follow these steps to pair these two speakers in TWS mode:

1. Hold the Bluetooth button on both the Flare speakers for 5 seconds simultaneously to pair them. The Bluetooth indicators will show flashing white, indicating these two speakers are in pairing mode.

2. You will hear a "tone" when the two speakers are paired successfully. You will see a solid white indicator on one speaker and a flashing white indicator on the other (the speaker with a flashing white indicator is the primary speaker).

Notes:

Avoid having any electronic devices between these two speakers and make sure the distance between them is not greater than 5 meters / 16.4 feet.

After that, connect the primary speaker with a Bluetooth device via an AUX cable. Now, you can use an AUX cable to play music on two Soundcore Flare speakers.

If you still have any concerns or issues regarding playing music with an AUX cable, please contact Soundcore customer service for further assistance.