M4A tagging in Windows

[geoff.getiplayer_list at alphaworks.co.uk]

I've tried replying to a more correct thread using the links in the 
archive at http://lists.infradead.org/pipermail/get_iplayer/ but my 
messages have been held pending moderator approval on account of 
"Message has a suspicious header" and it's not moved in a few days... If 
it helps, I use Thunderbird and this has previously worked fine!

The headers were:

Message-ID:<4D9CE211.3090409 at alphaworks.co.uk>
Date: Wed, 06 Apr 2011 22:58:41 +0100
From: geoff.getiplayer_list at alphaworks.co.uk
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.15) Gecko/20110303 Thunderbird/3.1.9
MIME-Version: 1.0
To: get_iplayer at lists.infradead.org
Subject: Re: Re: Patched versions available on github
References:<BANLkTimsHb_AJGCgL-GQEe5LiJwQOTUxJQ at mail.gmail.com>
In-Reply-To:<BANLkTimsHb_AJGCgL-GQEe5LiJwQOTUxJQ at mail.gmail.com>
Content-Type: multipart/alternative;
  boundary="------------030503020602050201030205"



Anyway, I've downloaded the patched version and I'm happily getting m4a 
output ready for iTunes and iPhone. I'm still not getting any tags 
though. I'm using the GUI under Windows XP.

Any ideas?

Thanks for all the great work that's going on here!

:)