SNDH is the standard Atari ST chip music format. It's not like the
crappy YM format. For instance , the music for Platoon contains 7 tunes
, this is ONE *6kb* SNDH file (12kb unpacked). The equivalent in YM
format you be 7 x 5kb YM files (600kb approx unpacked!!).
They can be played on ST or PC
on ST use sndplayer.atari.org
On the pc use http://www.deliplayer.com