if (supportedFile !== null) {
    this.fileName = supportedFile;
} else {
    this.fileName = fileNames[0];
}
if (isoFile !== null && (supportsExt('iso') || supportsExt('cso') || supportsExt('chd') || supportsExt('elf'))) {
    this.fileName = isoFile;
} else if (supportsExt('cue') || supportsExt('ccd') || supportsExt('toc') || supportsExt('m3u')) {
    if (cueFile !== null) {
        this.fileName = cueFile;
    } else if (!disableCue) {
        this.fileName = this.gameManager.createCueFile(fileNames);
    }
}