in the case of midi its not always stunning on the ears, but considering the possibilities with eclipse i'd at least try to install the mp3 mods and give that a go. I do however have a highly musical background and could probably make some ambiance as an mp3 without too much hastle. music in games sets the mood, even if the 'music' is just background noise for the area, if however you mean use rpg makers midi files…I would personally not xD