My Headphones dont appear as source o Music. Oh God Why?

Hi,
Welcome to the forum.
So:

Are you using your headphones through Bluetooth, or are you plugging them in?
If through Bluetooth: have you tried removing and recoupling the device?
Also, here’s a list of other things I generally recommend checking first:

  • Make sure you have the latest version installed from fxsound.com;
  • Try running FxSound as Administrator;
  • In Windows Sound Settings, make sure all your devices match at the setting “24 bit 48000 Hz” (max);
  • In Windows Sound Settings, make sure the FxSound device is set as the Default Device;
  • In Windows Sound Settings, disable Exclusive Mode for all devices (Playback ànd Recording);
  • In Windows Sound Settings, disable all Enhancements including Loudness Equalization for all devices (except for FxSound which doesn’t have this tab);
  • In Windows Sound Settings, disable Hardware Acceleration;
  • In Windows Sound Settings, disable all devices you don’t use, including the hidden ones.

Another tip:

Please let me know if your situation improves after checking off these steps or not; if not, we’ll explore further options.