14. The non-transitory computer-readable storage medium of claim 10 , wherein the steps further comprise: in response to a determination that the preferred audio language or the preferred subtitle language is unavailable for streaming, selecting a backup available audio language or a backup available subtitle language in place of the preferred audio language or the preferred subtitle language.
17. The non-transitory computer-readable storage medium of claim 14 , wherein the available backup subtitle language is based on one or more records of the preference database that associates a different original audio language and the particular account with the available backup subtitle language.