Did you test other Bluetooth devices with the Cinera to make sure that the Bluetooth mode works ? Also, did you test your earphones with other devices to make sure they work properly too ? And... did you make sure that your earphones are properly paired with the Cinera ?
When I first got my Cinera, Bluetooth did not work at all. But after a factory reset, it now works fine.
If nothing works and that you have ascertained your earphones are working fine, try a factory reset.