What would help a layman... 

A little background.
I have always loved languages. I am a native speaker of Arabic and English.
I have been dying to learn Hindi. Thanks to Wikipedia, I learned that Urdu would be a better place for me to start since I can already read the script.

However, I landed on the Retroflex consonant page when I could not read a few of the Urdu punctuation marks.

For me, the most glaring omission on the Retroflex consonant page is a small audio file so I can hear each sound. Telling me what it sounds like in a language I do not know (like Swedish or Polish) does not help. I was able to copy some words to Google Translate and listen to them there but that was of limited use.

I see that other articles have sound, video and animation so I do not think this would be a technical problem.

Just trying to help.