[ddouglass]

There is nothing you can do in Windows to prevent your hosts from copying the contents unfortunately. In order for them to do your show tey have to have access to them and that opens it up to copying. The only thing I could see you could do is to physically control the computer, by having them pick it up from you before a show and bring it back right after the show. That would give them no time to copy the files, but that is pretty extreme. Try having them sign a legal contract stating they will not alter your music files in any way (a lawyer could word it better) then you might have something for the courts.
Admin talked at one time about creating an encryption program that would encrypt and prevent your KMAs from playing on any other player including Hoster, but they have not come out with anything yet.