#10 Add explicit/clean tag to naming convention

Need to be able to add " (explicit)" and " (clean)" to the end of song file names.

This will allow better automation and scripting

Also add an id3 tag to indicate. Some accounts have a setting that will substitute a clean alternate version if it exists. The user needs to know if this happens. Either d-fi can do this, or pass through the information provided by the api so the user can do it themselves.