youÃ‚Â´ll notice that OGG / FLAC are amoung the most requested formats, if not the top two.
As well as I have noticed that, you will have noticed that these requests are continuously coming in for two and a half years now and nothing has happened. There must be a reason for that, as other requested formats have been implemented.
In addition to that an increased amount of requests in a forum is by no means an indication that a specific format is widely used.
OGG-Vorbis and/or FLAC are niche formats because
a. neither Windows nor OS X, which are the two mainstream operating systems, support them out the box;
I am considering ripping my CDs to FLAC precisely because it is the lossless format that is not affiliated with MS or Apple (WMAL or ALAC?).
d. none of the most popular programs for ripping CDs supports them out of the box (not even Winamp does when it comes to ripping).
Winamp appears to support ripping to FLAC, here now 13 months later. It appears from the other responses you got that this support may have existed back then.
So let's be realistic: Anyone who needs a device natively supporting these formats should not buy a Soundbridge - there are alternatives (but these, too, will certainly lack features that some people would like to have).
When I got my soundbridge maybe about 3 years ago, I was really happy about it, but had no idea what a FLAC file was. I was familiar with issues of lossiness from having tried to educate myself with respect to the issues in digital photography. I think when one buys a device there is some reasonable expectation of the company following through on improvements whose importance may become more apparent over time.
At this point, Roku seems to have signaled by their their inaction that they don't care much or at all about this issue of native support of the lossless format of FLAC. It does not seem as important to them as it seems to me.
Maybe they will support it if they choose to bring sound through the Digital Video Player.
Edit: I was a bit frustrated because until a few moments ago I couldn't get FLAC to work at all on my WHS/Soundbridge, whether natively or otherwise. I finally got it to work, and it seems fine, so I guess in the end, I could be satisfied with this solution. I can plan to move to FLAC when I rip my CDs, which I have held off doing.