The YM-2-MIDI Utility Version 2.1 was a project Andrew Gower worked on for most of his college years. It featured in the Atari zone on his site however the read more redirected to version 2.0. The brief description on his site read:
PC Program which converts YM3/YM5 files to PC MIDI files!!
The music playing on this webpage was converted using this utility! - Last Updated 25th Aug 98.
It is unlikely to be remade as Andrew Gower remade it 20 times already (this pages relates to the final remake).