audio support for fiber optics

good evening, in the installation of k lite there are some options for the audio, but there is no option for optical fiber which has a different function, since the audio is much fuller than a simple cable as a result you can not hear the sound clearly, you could in the next update add and fiber optic function to make really quality sound ? Thank you for your time

That option already exists in the installer: Bitstreaming -> S/PDIF

You can also configure it with:
Codec Tweak Tool > Audio Output