Hi,
We have extensive experience programming for several streamer devices firmwares, such as WDTV, Seagate GoFlex TV, Roku, Apple TV, Android/GoogleTV.
Particularly for Roku, we have many different templates based on the videoplayer sample provided with the SDK, and we can custom build your whole project, including content transcoding, very cheap CDN hosting directly at Amazon S3/CloudFront (same used by Netflix and Amazon VoD), including of your branding in the channel, banner advertisements whithin your channel to monetize your project...
Let me know if you would be interested.
Thanks.