At a square dance, you connect the Line-Out (or Earphone Out) connector of the laptop computer to the Line-In connector on the turntable.

Older Hiltons don't have a marked line-in connector, but on a 75 the connector at the left side of the front panel works well. On a 300 you have to use the 1/4" connector behind the tonearm (just remember to unplug it before the caller tries to play a record).

Plugging into an older Hilton usually works much better if you use an impedance matching transformer (such as Hilton's "Signal Booster") between the computer and the turntable.

At a round dance you don't need a turntable. You can plug the computer and microphone into a smaller amplifier and use a standard speaker, or you can plug the computer and microphone into a mixer and use a pair of hi-fi multimedia (computer) speakers that have a built-in amplifier.

For more information see Hilton Recommended Hook-Up for Recording and Recommended Hook-Up for Playback.