I would love this also. My ADSL upload rate is quite limited and thus when I am serving out of the LAN (typically to gizmo) I would like to ensure that there is conversion. A settings option in Gizmo to tell the server when to convert and with what settings would be a great. When I am in the house I can say "Do not convert", when outside the LAN, I can choose from a set of default choices that are defined on the server but available from Gizmo.
Craig