Short gap between tracks in multi-movement classical pieces

[rongon]

After a little experimenting, I think yes, if you have SoX enabled and upsampling, there will be a gap/silence added between tracks.

Once SoX is disabled there are no more gaps/silences between those continuous tracks I was playing.

I'll try SoX at 24bit/192kHz Medium quality to see if the gaps/silences still happen.