Oh no! more Lemmings is expansion of Lemmings. But Acorn Archimedes Oh no! more Lemmings's background music is different from other platform Oh no! more Lemmings's background.
If you prefer having the original Amiga tunes, here is a patch : www.pi-star.co.uk/ There's also a patch for the Lemmings game. More infos here : stardot.org.uk/forums/viewtopic.php?t=8970
