Johny Stewart Power Pro Convert A Caller.
About 110 bucks. You put your own CD, Tape or MP3 (I suggest you use MP3 but the CD will work too) player on it and away you go. Comes with everything but the player, even a fancy carry bag, car chager, and wall charger.
Then get yourself one of the JS Predator CD's. Each comes with 4 sounds. Cost 20 bucks.
You now have the caller, and 4 sounds for 130 or so.
Later on with the Nady or Azden systems you can make it wireless too.
Still using mine after 3 or 4 years. Just might fit the bill for you. AllPredatorCalls has them, or they did.