okay, so you click on an album and get this screen.
Hit the download album (with size next to it)
this will present you with this screen. Click on Potsload, for some albums there is an option to use Rapidshare, Mediafire, Filetram, etc. These are all third party file sharing sites and redirect you to where mp3Crank store their albums.
Click on Potsload.
This will take you to the download page above. Hit free download, wait your 10 seconds and hit 'create download link' Hey presto, you have an album.
EDIT: Forgot to crop the last two images, so the page is irregularly sized. My bad.