Hello,
TuneBrowser 5.5.0 now supports transcoding to wave format as well as audio/L16. This conversion to wave format is enabled by default. audio/L16 format only supports 16-bit, 44.1/48 kHz, but the wave format (as you know) additionally supports high-resolution formats.
This feature is called WavProxy (WPRX) in TuneBrowser. Conversion is done on the fly, similar to audio/L16.