How to add more songs to the ingame soundtrack?



The title says everything: if I add a song in the "soundtrack" folder (Program Files/Steam/steamapps/common/Endless Space), will it play while I'm playing?



Buy if it doens't work this way, how do I add more songs to the ingame soundtrack?

Good question. How do you add more audio tracks? Must they be in mp3 format? Can you go beyond the numbered list in the soundtrack folder? Do having more or less soundtracks affect gameplay? Will reordering the list have an impact on what gets played?