Presentation at Wikimania 2017, august 12, 2017.
For more info: <a class="external free" href="https://wikimania2017.wikimedia.org/wiki/Submissions/How_does_common_knowledge_sound%3F_My_experience_uploading_audio_files_to_Commons">https://wikimania2017.wikimedia.org/wiki/Submissions/How_does_common_knowledge_sound%3F_My_experience_uploading_audio_files_to_Commons</a>
<a href="//commons.wikimedia.org/wiki/User:Luisalvaz" title="User:Luisalvaz">Luis Alvaz</a>
<span class="int-own-work" lang="en">Own work</span>