Shame on hubby . I took a look on Samsung's website and it looks like they still sell an adapter for $10. It's part number AAET254CBE, M20-Pin Multi Adapter. Scroll down on this Samsung Alias accessory page to find it: http://www.samsung.com/us/consumer/detai...=SCH-U740ZAAVZW .
In case you'd rather have a wired headset instead of keeping track of an adapter and a headset both, Samsung also lists a mono and stereo headset for the Alias on that page that plug directly into the blade connector on the phone. These are also $10 each.