A .eani file is a mixer source store as a file. (eani = External ANImation)
A .preset is a file which contains information belonging to a property set. The exact contents varies depending on the context which it was saved, but in layman’s terms you can think of it as a file containing PPG parameter settings plus related metadata. Presets are the original binary format for importing/exporting data in XSI, but due to it’s arbitrary structure and cumbersome workflow, over the years it has been largely replaced with self installing plugins, scripts, and other tools. Matt
