My initial beta only had those two skin resolutions... sorry about that... You can try to make it not crop off by opening the skin.xml file and changing the resolution in the APPCONFIG section from 848x480, to 800x480... This might mess up the HOT SPOTS a little, but I am actually not sure what it will do...
The reason I haven't made all the resolutions yet, is because I am still working on my skin... I am going to wait until I have my finished skin, before i spend all the time to make all the resolutions, but once its done, I will make them all....
A teaser for my new skin should be coming soon
david