Audio via Bluetooth - is it possible?

Can I connect my Bluetooth speaker JBL GO to a Raspi?
I tried to pair and connect in MyOSMC → share → bluetooth menue.
I got the message ‘Bluetooth Connection to JBL GO failed.’
Here’s the log

Model: RPi 2B
Display: official 7" Touchscreen
Internet: Lan cable
no CEC
Sound: JBL GO Bluetooth Speaker # INFO: 3.5mm plug speaker works
OS: OSMC with skin Estouchy
Bluetooth: Bluetooth USB Stick

osmc@osmc:~$ cat /etc/os-release
PRETTY_NAME=“Open Source Media Center”
NAME=“OSMC”
VERSION=“April 2018”
VERSION_ID=“2018.04-1”

# osmc has no lsusb command, I used another raspi with raspbian
osmc@osmc:~$ lsusb
Bus 001 Device 006: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)

Before you tell me to use ‘a2dp-app-osmc’, that is not possible:
osmc@osmc:~$ sudo apt-get install a2dp-app-osmc
Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package a2dp-app-osmc