Another question: I have my audio files in another domain, so the question is how can I add an external audio file to a post. I tried with but it doesn't seem to work, just work for audios in the media directory, if I'm not wrong.

@fede the ?p parameter is supported. Are you getting 404 errors?

Regarding the audio file, the current [audio] tag is meant to be used with files attached to the post. However, you can use the html5 <audio> tag to include external files:

<audio controls>
  <source src=":http://myblog2.com/audio/aaa.mp3" type="audio/mpeg" />
</audio>

Thanks for your answers. You are right:

1. My fault, I was tring to use ?p=... with a page, not a post.

2. html5 audio tag works perfectly.

Sorry, another question.

In 693 there are no stubs files anymore?, at least visible ones. How can I do to create a stub file to show only blog 3, for instance, like old blog3.php? I'm converting from 5.2.2, and I need stubs for the sake of old url's...

Old stub files continue to work.