big track does not play

[lyapounov]

I have an issue, and honestly it is hard for me to know where the problem is.

I have a very big single flac track, over one hour (64:46 minutes:seconds); 303Mo

Lumin app does see the file as 64:46 minutes, but on the top circle, it says 64:46 for half a second, then switch to 2:37, and the music stops at 2:37 (renderer is Klimax DS)

On another renderer (Yamaha WXAD-10), the top circle says 64:46 but again, the music stops at 2:37

I switched from lumin to Kazoo as a controller, well again the music stops at 2:37 and there is absolutely no indication of timing on this track.

I have looked at the file in audacity, and all is perfect, the 64 minutes are there.

What could it possibly be ?
Thx !