Horrible playback quality. Very few of the XMs I tried worked, they either earraped me or refused to load with "deck connected to invalid source". The XMs which broke were MPT modules. The first IT I tried had horrible sound quality and the bass instruments were completely inaudible. Frequent crackling and muffled sound. The old version of DeliPlayer sounds better than this. There are also next to no playback controls, no subsong support, and as I am writing this the font on this page is way too large and difficult to read.
libsndfile is not a module rendering library, please use literally anything else.