Download lift-json jar from http://scala-tools.org/repo-releases/net/liftweb/

Be sure to grab the proper library for your Scala version, at time of this post the latest was located at http://scala-tools.org/repo-releases/net/liftweb/lift-json_2.8.1/2.3-RC5/

import net.liftweb.json._
import net.liftweb.json.JsonAST._
val data = xml.XML.loadFile("quotie.xml")
val str = Printer.pretty(render(Xml.toJson(data)))
var out_file = new java.io.FileOutputStream("quotie.json")
var out_stream = new java.io.PrintStream(out_file)
out_stream.print(str)
out_stream.close