How can i remove the powered by in the loading of the app?
Is that a license that i need to buy?
Where can i get more information about it?
All you have to do is change the "default.png" file in both the "Resources/iphone/" and "Resources/android/" folders.
That screen is in no way required by Titanium as a copyright logo or anything of that nature, it is just there (Like the App icon) to show you where the files go and what they are for.