I got new Logitech G560 speakers, with USB connection to my computer, and they work like a charm. Except for Firefox. No matter which page, Youtube, Facebook, Netflix, Amazon Prime, Twitter... no sound for videos. Firefox is quiet. If I check my sound settings, the bar for sound input is not even moving, seems like Firefox is just not recognising or forwarding any sound to my USB G560 speakers. On the other hand, everything works in Google Chrome and sound is brilliant. The problem just seems to be with Firefox. I disabled all audio devices, especially my old audio-out where I had my old speakers. I updated the drivers for Realtek HD Audio (even though I am sure I do not need them for the G560) and also updated again driver for the G560 as well as the Logitech G Hub. Firefox is also the latest version. But nothing. Only thing happening is after trying to often to load a video in Firefox to get sound, and checking my sound settings, I get an error message saying the audio enhancements are not working properly and asking me if I wanna disable them. If I click yes, it solves the issue and Firefox is forwarding sound to my G560. Now I thought I can disable any sound enhancements in general in WIndows 8.1... but no chance. I cannot find any setting for that. No matter where I search, it seems only Windows 10 gives that option. There is also no sound enhancement in G Hub or when checkin the system control for devices. Re-Installing the G560 drivers does not change anything. So if I wanna have any sound in Firefox I am depending on the error message popping up... which happens only rarely. But that can't be the solution :( It seems to me the problem is with Firefox, in the way it handles the sound channel or content or whatever... and does not recognize my G560 via USB as speaker system. Even though it is the only one set active in my system. I am really looking for any help and input to solve this please... !