There's a pretty slick Windows application that will allow you to post directly to your Blogger Beta account. The Firefox extension Deepest Sender, which allows posting to LJ, Blogger, and Wordpress, doesn't work with Blogger Beta yet, so here's a workaround that you can do meantime.
I prefer FOSS applications that run natively on GNU/Linux, but sometimes, you really need to use a platform where you are most productive. Writing stuff from anywhere will mean doing this from my Windows-run notebook. Not so much an issue, I hope.