Hi Peter.

Regarding to the copyright etc., in example, if you use a style from retail/genuine disks, it is copyrighted. If you use the native styles from the keyboard it's public as far as I see it, unless there is any written notes about restrictions by use of the keyboard or to use it in public. (That would have been something)
If you make a style by yourself it's yours, and you can do as you like, get it copyrighted, or make it public by make it free for everybody to use without any restrictions.
Then again, the songs used have a composer / author, who most likely have the copyrights to the song, and it's not legal to spread round, just like we see regarding to lyrics, sheets and midi-files.
Lately there have been payed high attention to these matters, and in my country (Norway), we just have seen a massive attack against illegal stuff, both at websites and forums/groups.

Looking to my website i.e., you will not find any "genuine" stuff, other than converted styles from the internal (public) styles of different keyboards/brands. If I had used retaildisks who are addon tradeware, i.e. from Technotes webshop or elsewhere, I would probably been offweb long time ago, because then it's illegal according to the copyrights etc.

Everybody know that some of us might swap such disks among music friends once in a while, it's not any big secret at all, but then we better not announce it for free, just keep in touch by e-mail or snailmail, and keep the head low.

Hope this explained a little, and if I have wrote some wrong here, please jump in and correct or add what might be for more help at the topic.

Kind regards
GJ