How do I change Firefox's audio output device without relaunching the browser?

I frequently switch between different headsets and speakers using USB audio devices. Whenever I change from audio device to another, Firefox does not change it's audio output to match my current device. Other programs/games follow suit when I change my default audio device and I really dislike that I have to exit out of Firefox completely and reopen for my audio to come through the correct device. It's not a huge issue, but when I have multiple windows and multiple tabs open it can be annoying having to start my browsing session all over again. Any tips to deal with this issue?
Thanks!

philipp,
Thank you! The beta worked perfectly when I swapped between audio devices. I just had to make sure I disabled the devices that weren't in use before Firefox would switch to the new default.
Unfortunately, while I was typing this message my client crashed, but that's not uncommon for a beta.
Thanks again for your help!!

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