[Chrome Extension] Memrise Audio Uploader!?!

Hi.

After searching for a way to mass upload audio for my courses I came across this chrome extension.

I was just wondering if anyone has used it before?, does it work well?, does it work with Decks?

Or is there an alternative to this that I can use?

As I’m currently creating several sentence/vocab courses for Japanese that have 1000’s and 1000’s of entries, so I don’t want to have to get audio for each individual item otherwise that is going to take me ages.