convert type UnityEngine.Object to UnityEngine.AudioClip

Hi guys! I'm trying to make a OpenFilePanel like this one but I want to open a ogg file. I'm also writing in C#.

I have this:

 AudioClip audio = Selection.activeObject;
         
         if(audio == null){
             EditorUtility.DisplayDialog("Select a music", "You must select a music first!", "Ok");
             return;
         }
         
         string path = EditorUtility.OpenFilePanel("Teste", "", "ogg");
         
         if(path.Length != 0){
             WWW www = new WWW("file:///" + path);
             
         }

I'm having this error: error CS0266: Cannot implicitly convert type 'UnityEngine.Object' to 'UnityEngine.AudioClip'. An explicit conversion exists (are you missing a cast?)

I tried somethings but got nothing. How can I make it? Thank you :)