Modding

It’s easiest to do in the editor. Select the desired hero with a left-click, look at the left panel (ObjectPropertiesTree), the “Shared” line, click on the content, click the “…” button; there you’ll find the “AdventureMusic” line, click on the content (it will be empty), then click “new.” And then, give the file a name with the music description and, most importantly, provide a link to the actual music track.