You can listen to anything your computer plays, so if you are listening to steaming music on the computer it will play on the speaker.
What you need to do is pair it, to do this, go to control panel in windows, then type in the search Bluetooth and click on add a bluetooth device.
Then press and hold the bluetooth button on the speaker till it blinks blue
Then add the device on the computer (via the add a bluetooth device)
Once added, right click on the speaker icon on the bottom right in windows, and choose playback device
Then right click on the Bose device in the list and select set as default
All sound from the computer should then come via the speaker
Let me know please how you go