Bluetooth headset working with vlc, but no sound on clementine

[mylo]

Hi all,

has anybody here a bluetooth headset working and uses it with clementine without any problems?
Does anybody understand, why such a device works well with vlc, but not with clementine (as I experience no sound there in opposite to vlc)?
Thanks for any hints.

P. S.:
1) The same question arises concerning sound on videos from websites? Is there an additional setting I have overseen to send the audio output to the headset?

2) amarok also works fine