Fetching Random Lines From Different Text Files

I'm looking for a way to have a single, random line fetched from multiple text files, and then have that combination output somewhere, whether just to some field or another text file.

For example:

Text file A -

Text file B -

Text file C -

So it would go in, get a line from each, and display something like:

I know it's a weird-sounding example, but you get the point. The line choices don't have to be separated by hyphens, but they preferably would be separated by something, like a comma, semi-colon, slash, whatever.

I know this is pretty much a web coding forum, so that would be fine if I had to host it on my server or open it with a browser. But it would be optimal if this could be made into a standalone executable.

I'm basically looking for something like Random Line Picker [url], just with the added functionality I mentioned.

I'd be willing to make a little donation to someone if coding this would be a little difficult.