thanks for posting.
i have the same config with latest xmplay, but i found out that the mod tab holds the relevant options.
it is the interpolation that i forgot to turn off, and now the deliplayer wavs sound quite close (still bit different). and the length of the songs are different too.
there is a lot more options to set. any 'expert' knows which i have to set else in order to have 1:1 amiga format to wav 16bit 44,1khz.
ps: in deliplayer i always made sure to set every optimization off & it had a switch 'bypass sfx' before recording.