In case anyone is running into the issue of trying to install Angry Birds Rio (available now at the Amazon Appstore) on your Android phone and all you get is the "Application not installed" message here's how to solve it:

- Connect your Android phone to your PC to open the SD card. 
- Cut the android_secure folder and paste it to your PC (in case you might needd to put it back). Your phone will recreate this folder. NOTE: I've been told this is the wrong way to do this. The right way to do is to go into the android_secure folder and delete the smd12tmpl.asec file. I did it the way I stated before and I didn't loose anything but I figure I warn you before encouraging you to do this.
- Disconnect from the PC and re-downloaded Angry Birds Rio. 
- It now successfully installs!!

And that my friends is how you do it :{D


Thanks to drumgal98 from AndroidCentral.com for this bit of info (http://forum.androidcentral.com/htc-evo-4g/70611-cant-install-angry-birds-rio-2.html)