[LAU] Sending audio to a pipewire sink

Hi, there! Everything's just easy with pipewire, isn't it? Well, since pipewire's here I have some problems with it using my beloved linux-show-player (LiSP) in combination with jack-output. So, I'd like to use a workaround using console-commands… I have a build-in audio device and a bluetooth connection, pw-top lists these devices: Dummy-Driver Freewheel-Driver […] alsa-output.pci-0000_00_1b.0.analog-stereo […] bluez_output.[bluetooth-adress].1 […] How do I send a stereo or mono audio stream to the bluez-output with a console command? Can I use aplay? (Because aplay -L doesn't list the bluetooth speaker…) Any ideas? Thank you! Mitsch