Okay, I just spent the entire morning dicking around with the old streambox.
I think the streambox is working better here (new location) where the electric is updated. With the same old box I no longer have the pulsing hum from the wireless card.
I tied the VGA nut to my water pipes which are grounded and that got rid of a lot of the base hum. It sounds more or less like when the VGA is plugged in.
The only thing is that it still crackles a bunch and doesn't really pick up all that much.
-august.