Same issue for me
I use Chord Mojo plus Poly with last firmware 1.0.26 and GoFigure
app to setup Poly
GoFigure shows that there are 339 files on the SD card (all DSDs), and Glider is only 319
After my own analysis, I had this hypothesis
There is a feeling that Glider does not handle DSD files that are larger than 2 GB
For example, there is an album with 5 songs, which have all the necessary tags (metadata). However, Glider shows only three files, the size of which is less than 2GB, and the two remaining ones with a size of more than 2GB are not.
At the same time Audirvana on MAC also finds in the album 5 files.