REDIRECT Fix common audio and video issues
The slug is the same as the title with space and big letter.
So i suggest to change the slug from:
"Flash-based videos and sound do not play correctly"
Nothing needs to be done since the article https://support.mozilla.org/en-US/kb/Flash-based%20videos%20and%20sound%20do%20not%20play%20correctl...
[[Flash-based videos and sound do not play correctly]]
becomes Fix common audio and video issues