The transcoded stream from the Slingbox is only useable from the Slingplayer client due to encryption. You might consider looking at http://www.monsoonmultimedia.com or http://www.myvulkano.com for products that don't use enforce encryption. I understand they're coming out with a box called the Vulkano that will do exactly what you want.
Thanks for the info. I did not know about the encryption hurdle. I am assuming that there is encryption from the server to the client - not that the files had to be encrypted using Slingbox's proprietary encryption in the first place. If this is the case, then I would be happy to use the Slingbox client software - especially when the updated version comes out for the iPad.
Or, do you mean that the Slingbox recorded files are encrypted and that the client only works with such encrypted files? Now, that would be a show stopper.
Thanks also for the Monsoon suggestion. I did, in fact, already contact Monsoon's customer support, explaining that "Main goal is to stream my MPEG-2 library on my WHS to my iPad.". Their email states that "You cannot use existing Windows Home Server HDD or NAS for storing/Streaming the contents with Vulkano." As for their HAVA products, I was told that "They won’t do either."
It is possible that I was not sufficiently clear in my email request to their support. They did tell me that they could not record OTA via my HD Homerun tuners - but I don't care about that. I can continue to use SageTV for recording and HD Homerun as my OTA tuners. I just want to stream what I have already recorded.
Have you seen links to the Monsoon literature that explicitly states that the Vulkano could stream from an external NAS? I wish that Popcorn Hour, or some other NMT, had an HTTP server for such things!
From what I've read, it can stream video as a client from either uPnP or DLNA device.
A Media Extender
It doesn’t end there however! The Volcano can also play videos off local storage media via USB, eSATA and UPnP. It even crosses into media extender territory with support for DLNA meaning it can access DLNA compatible devices on the home network.
As Monsoon support put it, "Sorry it would not do that. In the “TV Out” mode it will display compatible contents being served up by UPnP A/V Media Servers on the network." I.e., you typically need a TV display for the user to have the Monsoon device select the right DNLA Media Server, navigate to the content, select play, etc. It will not act as a "DNLA Proxy" to serve up the same navigation choices to another DLNA Client running on your iPad.
Theoretically, Monsoon could be configured to automatically connect to a specific DLNA server, "gather" served up content meta data and present it in a web page via a known IP/Port address's specific URL for the user to click on and then have the system connect, transcode, and stream - but the Monsoon product does not do that.
So, from the iPad, there is no way to exploit the Monsoon DLNA client in order to select content from my Windows Home Server - not by a Monsoon iPad app, not via a DNLA iPad app, not via a web page.
Shame - I was definitely interested in some of the buzz around their new product line.