Problem with metasource and metadata

WD Legacy Products WD TV Live Streaming
2

It’s possible to add new metasources? How? 

Yes, look at the user manual, page 190.

http://www.wdc.com/wdproducts/library/UM/ENG/4779-705062.pdf

-It´s possible to add metadata to a folder? I think it is interesting for tv shows

No.

-I don’t find metadata for tv shows. How can do it?

The name of the show is fundamental, for example:

terranova.S01E03 show give you results.