32 bit to 16bit wav batch converter that preserves loop points. – Samplers, Sampling & Sample Libraries Forum

Sox preserves the loop points, but it doesn’t adjust them if you also change the sample rate. Therefore, when using sox, the loop points will be correct if you change only the bit resolution, but not the sample rate.

Waveosaur adjusts the loop points when changing either the resolution, or the rate. Consequently, Waveosaur is the better option.

Just a heads up. Waveosaur doesn’t apply any “smoothing” to the loop when changing the rate. Therefore, it’s possible that the loop will have an audible “click” after changing the sample rate. The easiest fix is to go to the end point (of the loop, after the rate is changed) and move it left one sample point (shorten the loop by one sample). Mark these as the new loop points. Then do a 50% crossfade on the loop. That should fix the loop.