There's a bug in the 1.1.1 firmware that lets you stream audio through bluetooth. It's not quite Stereo Bluetooth. It's essentially mono Bluetooth, but it brings some functionality, and may be useful for podcasts and the like. To get audio through Bluetooth:

  1. pair your Bluetooth, if you haven't done so already
  2. open Visual voicemail
  3. select 'Audio' at top right. If it doesn't say 'Audio,' reconsider step 1.
  4. It will bring up a dialogue box to choose sound output. Select your Bluetooth headset
  5. Presto! Enjoy your audio through both the speaker and your Bluetooth headset.