Problem installing AdobeAIR

I have ubuntu 9.04 and I am trying to install Adobe AIR in order to use BBC iPlayer. I believe I have met all the system & software requirements but when I try to install AdobeAIR using Applications>Accessories>Terminal it fails to instalI properly and I am told there are unmet depedencies, in particular that is a conflict between 'winbind' and 'winbind4'. Sure enough, when I go into system>administration>synaptic package manager installing 'winbind' uninstalls 'winbind4' and vice versa. Terminal also says there are broken packages. Am I doing something wrong or is this a software problem? Or is there some other reason Adobe AIR will not install properly? I'm still a bit new to all of this.