I've amended my post a bit to explain further, but not everyone uses it for that. I have had various forms of Kodi ( from XBMC) for years, and it is only recently that the streaming direct form the internet has been used. In the past I would burn my (bought for ) music and DVDs to my NAS drive and use Kodi just as it was meant for...as a media centreWhich is what every one uses it for.
Streaming from reg net is still legal, thanks to the EU.