On loading your game project, in the console (Open by pressing F8/F12) type $gameTemp.preloadList()
Is your audio file in that list?


Apologies for the late reply. It seems like it was an fault at my end. Tho I'm suffering from memory leaks at the start-up of a (battle) test when the plugin is enabled. I tried to put in directions for it to ignore, but it's not ignoring any files which lead to it preloading unessecary files (like the se for example). Is there something I'm doing wrong here?