Bluetooth Headphones

[degeulars]

Hello all,
I have been trying to setup xbian to send audio to bluetooth headphones. I have followed the instructions from this thread. I managed to successfully connect to my headphones. However I don't get any audio coming out of them, just via the HDMI. I haven't got any other audio output available in the settings of kodi. And I can't find any setting to send the audio to that output. Has this changed since 2016 when this tutorial was made? I have tried poking around a bit with PulseAudio, but from what I can see I don't get Kodi to start with PulseAudio, but with ALSA. And from what I can understand bluez-alsa is no longer supported.

Any help would be welcome, thank you all!.

Software
XBian version: Xbian 20191008-0
XBMC/Kodi version: 18.5
Overclock settings: default

Hardware
Device type and model Raspberry Pi Model B 512 MB first gen.
Power supply rating: 2A
SD card size and make/type: 8gb
Network (Ethernet or wireless): Ethernet
Connected devices (TV, USB, network storage, ...): TV via HDMI and USB Bluetooth dongle Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)