I'm just testing the Zempt client here. It's quite interesting, and maybe I'll use this from now on when posting to my MT blog from home... if it works decently, that is... rather than opening a new browser tab in my already very crowded Opera. Hehe. We shall see...
[EDIT] Well, it works fine, after a bit of kicking it so it would take my preferences. There's also a Winamp plugin for it so you can click a button and have it insert the title of the song you're currently listening to in the post. And you can save posts and publish them later, so you can post without an internet connection...
...I think I'll load this on my laptop, so when I go on holiday I can type up daily updates on what I did and upload the lot of 'em when I get back. Aren't you happy? ;)