After several unsuccessful attempts at downloading/installing Angry Birds from the mediafire link, I finally found a download link that worked for me.
I used my phone to dowload the apk file from the link below and it installed without a hitch. I did not have to unzip the file as the instructions seem to indicate. Once the download completed it automatically opened in Astro File Manager and installed.
As others have stated, this game is like crack!
Can’t get Angry Birds Lite on the Market? Download the APK