Just an update for anyone else having the same issue. I wasn't able to download Aldiko from either the Android Marketplace (I'm thinking Marketplace might be for Android phones only) or Aldiko.com. I entered my e-mail address (same one I use on my Kobo Vox) as requested, but when I click on "Grab It" I get an error message, "Sorry, the email could not be sent. Click here to download directly. Thanks." So, I click, and I get another error message saying "Not Found". I get the same result whether I do this from my Kobo Vox or my PC so I'm thinking it's the website, not just me. I'll try and see if I can locate some mirror download sites and advise.