Short duration. The files should only be spoken examples of the language and thus no longer than 2-3 minutes.
Documentary character. The files should focus on the speech and not include background music or other unrelated voices that may prevent listening to the speech.
Non-specialist language. The content should document narration of short stories, narration of news, information on general topics, simple explanations, brief conversations or pronunciation of words and phrases. Documenting speeches on specialist topics that either require advanced knowledge of the language or include substantial amount of foreign words are not good examples for exposing to the language and therefore should be omitted (instead, topics of general interest that can be considered include summarised information about the language itself, about the country or region it is native to, etc.).
Fluent presentation. The content should be presented by a native speaker of the language, language variety or dialect that is subject to the file.
The audio and video files can be used on the following Wikimedia projects:
Wikipedia. The files whose content documents narration of short stories, information on general topics and simple explanations present are good spoken examples that help readers more comprehensively expose to the language.
Wikibooks. The files whose content primarily documents brief conversations are good spoken examples that help readers studying the language develop some language skills. However, files documenting other content may be also useful for learning purposes.
Wiktionary. The files whose content documents pronunciation of words and phrases are good spoken examples that help improve the quality of dictionary entries.
Wikivoyage. The files whose content documents brief conversations and pronunciation of words and phrases are good spoken examples that help improve the quality of travel guides.
