airplay language

Good afternoon all.

So today I got an intersting issue:

I purchased a movie from Itunes that comes with couple audio tracks (Englsih and French)

When I play the movie on my Mac, it works fine , I can either get it in Englsih or French.

However, as soon as I airplay the movie to my Apple TV, then only tracks that plays is English.

Do you know know a trick to be able to play whatever language even through airplay ?

Thanks.

(just in case, itunes and Apple TV are both at the latest version,

Gerry.