Not all pages are visible in the blogspot

You - or the person concerned - needs to remember enough details to convince Google that they really did create the blog.

There are links to the forgotten password process (that won't work without access to the email), and to the account recovery exam, here:
http://blogger-hints-and-tips.blogspot.com/2010/11/deleting-blogs-and-blog-posts.html

You / they are welcome to take the account recovery exam as many times as you / they wish: some people report success after the 3rd or 4th attempt.

Remember, the flip-side of this question involves people pretending they made blogs that they didn't really make, and asking to have them taken down just because they don't like what is said.

And if they cannot manage to take the blog down, the other option is to load other stuff on to the internet which will put the undesirable content further down the search-engine result pages.

If you use Dropbox, here's a quick solution using Google Audio Player:

1. Upload audio file to Public folder on Dropbox, and save its public link somewhere.
2. Embed audio player in your blog post with this code (via):

<embed type="application/x-shockwave-flash" src="http://www.google.com/reader/ui/3523697345-audio-player.swf&quot; quality="best" flashvars="audioUrl=MP3link" width="400" height="27"></embed>

3. Replace "MP3link" with the link we got in the first step.

That would give you an audio player in your blog post allowing visitors to play.

As for the download option, simply provide the direct-link to your audio file.