If "Get in shape!" lands on your list of New Year’s resolutions, give yourself a boost with one of these workout programs for your iPod. It’s like having your own personal trainer: • www.iTrain.com. Sculpting, rowing, stretching, strength, climbing and running workouts. Ninety-nine cents for a single workout to $79.99 for a 12-month package. • www.yogatoday.com. Free audio and video downloads of various yoga workouts. • www.djsteveboy.com. “Podrunner” site offers free downloads of one-hour music mixes. The beat on each mix is consistent.