private object GetAudioClipPropertyValue(AudioClip clip)
{
if (clip == null) return null;
var assetPath = AssetDatabase.GetAssetPath(clip);
if (String.IsNullOrEmpty(assetPath)) return null;
var assetName = Path.GetFileName(assetPath);
var outputPath = Path.Combine(babylonScene.OutputPath, assetName);
File.Copy(assetPath, outputPath, true);
Dictionary<string, object> assetInfo = new Dictionary<string, object>();
assetInfo.Add("type", clip.GetType().FullName);
assetInfo.Add("filename", assetName);
assetInfo.Add("length", clip.length);
assetInfo.Add("channels", clip.channels);
assetInfo.Add("frequency", clip.frequency);
assetInfo.Add("samples", clip.samples);
return assetInfo;
}