Similar to any DSS system, one of the Vertus dongles (the right channel, in this case) acts as the master to receive the stereo stream from a Bluetooth source, and then it'd throw the left-channel stream to the other dongle.

ENGADGET

Once you become a Linux Jedi Master feel free to take a swim in the ocean of alternative open source filesystem types.

ENGADGET: A guide to Slackware and Arch Linux: getting your hands dirty with Linux