EloquentSoundRepository.php

protected function map(SoundGroupModel $soundGroupModel)
    {
        $soundGroupArray = $soundGroupModel->toArray();

        $soundGroup = $this->mapper->map($soundGroupArray);
        $customFiles = $soundGroup->getCustomFiles();

        foreach ($soundGroupModel->files as $soundGroupFileModel) {
            // Needed variables
            $name         = $soundGroupFileModel->name;
            $relativePath = $soundGroupFileModel->relative_path;
            $absolutePath = $soundGroupFileModel->absolute_path;

            // Get the root of the application and the custom folder for this sound file.
            $root   = str_replace("/$relativePath", '', $absolutePath);
            $folder = str_replace("$name", '', $relativePath);

            // Get the custom file.
            $folderCollection = $customFiles->getFolder($folder);
            $foundFile = $folderCollection->getFile($name);

            $newFile = (new SoundFile($root, $relativePath))
                ->setAltered(true)
                ->setMigrating($soundGroupFileModel->migrating);

            if ( is_null($foundFile)) {
                $folderCollection->push($newFile);
            } else {
                $folderCollection->replaceFile($newFile);
            }
        }

        return $soundGroup;
    }