Audio query

[Eidolon]

I am not a Prime member, but purchased a video that was of interest to me as it was going cheap.
The film in question is showing up as stereo, but physical media releases of it are in 5.1
I'm not sure if this is some kind of auto-detect on the part of the firestick, or if that's the limit of the audio included.

If I put the stick into my surround sound instead, will a 5.1 option appear?
Thanks.