The transliteration is missing and the pronunciation field is empty for a lot words in the course https://www.memrise.com/course/320395/thai-frequency-top-4000-words/ created by @BlueRock68 (thanks !)
I dont see any transliteration after the level 4.
I dunno if it’s a bug or the data is just missing… whatever I generated a JSON for you here just in case: http://miprosoft.com/transliteration.json
Thanks again !
PS: You can upgrade me if you want 
Hello Luc,
The data is missing, no bug. I’ve added you as a contributor for this course.
Hi ! Finally
Huu… I’m a programmer I dont want to do it manually… yeah I could write an userscript to add the missing data automatically but…
.
I wonder if it is possible to export / import data as csv ? I posted a message on the forum about this.
On the other hand, without any reply from you I wrote a userscript adding them dynamically on page content change, plus a link to dictionnaries and a contextual menu: https://miprosoft.com/memrise.tft4w.user.js
Enjoy 
I managed to add the transliterations from the javascript console… enjoy
I could follow the same method to upload the audio files… but I need to download them first…
Still with my userscript you can see the (better formatted) transliterations on the summary pages and it adds links for the dictionnaries