I've given a direct link to Aldiko on several posts...try this link:
http://aldiko.zendesk.com/attachment...d-2.00.127.apk
And you're right, we can't access Market without some special procedures...
If you have time, read some of the threads, much good info there about finding and installing apps and what the Vox can and can't do. It's pretty much all been covered since the launch in October.