Is there such a thing as a Network drive (nas) that can also be mounted locally by a USB device? So that a network could be used to move files to the drive and played by the Roku?
This absolutely is
possible! Iomega has a great new device called an iConnect Data Station
. It is a wired(gigabyte) or wireless NAS with 4 USB ports (that can also be used to share a printer) - USB drives of any kind can be used but must be formatted as FAT, FAT32, or NTFS. All of these formats are compatible with the Roku USB media channel - so, all you need do is plug your USB drive into the iConnect, load up files, unplug it and then plug it into the Roku. Amazon has the iConnect for under $75