I have added a Filter to the default renderer, field "url", tested "Replace" as both "true" and "false", Filter Type "FACET_MERGE", containing this text:
casesensitive=false
regexp.1.find=smb://
regexp.1.replace=file://
and also tested this text:
casesensitive=false
regexp.1.find=smb
regexp.1.replace=file
but URLs were not changed. What is the simplest way to get OSS to output file:// URLs? Endpoint changes are not practical, and this is a Windows environment.