Revert "Creating two functions from duplicated code"

This reverts commit 59b4cefd53bab74cc95d708e04616aafb3dc0f97.

Conflicts:
headphones/postprocessor.py

Reverting PP changes
Reverted PP
Merge branch 'master' into develop
Normalize path replacement strings

Potential fix for https://github.com/rembo10/headphones/issues/1824