Yes, Zappo’s WDTVMedia HD is one way. I currently have five apps on my iPad for streaming stuff to it. Each has it’s own advantages/disadvantages and requirements for use.
I have these five iPad/Phone apps installed for accessing the network data (i.e. media player’s data) so they play on my iPad.
1. Pogoplug app – specific for using with a Pogoplug device; enables access from anywhere on the internet. for streaming; not just within local network. (listening to music with it right now on local network!)
2. VLC Streamer – streams movies; i.e. ISO, MKV files; even DVDs within local network. CPU intensive,
3. WDTVMedia HD – streams DLNA compatible files (music, movies, photos) from media player to iThings; for local network use.
FileBrowser – access your local network like you can from your PC and play stuff. Can be setup for outside network, too.
AiCloud – specific to my ASUS router; similar features as FileBrowser, enables access from anywhere on the internet.; not just within local network.
Search this forum for the names of these apps, as I have written something about all of them. Many of these apps are available in Android flavors, too.
A gigabit network and wireless N w/5G connection really helps these apps to work well. A fairly fast PC does too. (A faster PC w/quad core – my next big purchase – it just never ends!)