Well firstly you are making the assumption people will know what you are talking about.
It helps if you supply some information regarding what BrightSign is and also what you are doing to incorporate a Hype project.
I have never heard of BrightSign before but they do have a HTML dev support page which if you have not looked at yet you should.
If the answer is not there then can you please give us some more info on you setup ,what you have tried (code wise) and also an example project that you have made that exhibits the ‘doesn’t play’
I suspect not many of us will be able to test… but may have some insights that may help.