Sync for non mobile devices?

A couple of my users live in pretty remote areas where their download speed cant play them a good quality file. Last night i was asked if there was a way for them to predownload it to prep for movie night. I know there is on tablets and cell devices but i have yet to see a sync option for any sort of TV-connected device. As of now my best suggestions would be to sync on his phone then use airplay to get it over the TV. Thoughts? If any sort of device would do it i do not think he would have a problem with getting it.