96kHz/24 bit showing as 96kHz/32 bit

On the website of lessloss.com I found a number of Hires (96/24) demonstration files.

When I play the files the codec information in the progress bar circle shows 96/32.
How can this be - is there resampling going on in the background perhaps?

Volumio Information

Volumio Version: 2.779
Hardware: Rapsberry Pi 3B
DAC: HiFi Berry DAC Plus