what is a good way to utilize a track bike in a training program?

find a club and race it against other people?

Use it to climb BIG hills.

If you haven't ridden fixed before it may improve your cadence as well as smooth out your spin. If you climb out of the saddle fixed you will probably find a big difference. I found out why a lot of people actually slow down when they stand up. Fixies don't like the stomp stomp style of pedalling.

when I was building my fixie, my LBS guy was talking about one that he built up to train his legs for high-cadence efforts. he used a 32T/16T setup, and he said he was cruising at like 110 rpm.

For mine I used a 42/16 and just rode it to work (3 miles each way). I think it helped a bit, but I have a crappy seatpost on it now without enough setback, so my fixie bothers my knees.

I would train the same way as you would on a coaster and be smug in the knowledge that you pedaled every mile. Is there anything specific that you are training for? You might get better answers that way. Are you just wanting to improve cadence and spin for your roadie or are you going fixed all the time? Are you wanting to race track?

i do want to race track next year. that's how i justified spending so much on my track bike earlier this year. for now though, i want to train for local road races. improving cadence, avoiding my problematic habit of coasting too much, etc. however, i just don't feel i get enough of a work out when i ride this bike. i don't live in an area where there are miles of staight road to spin on. lot's of starting, stopping, then starting again. it's fun to ride, but i'm not so sure it's helping me all that much with my racing goals.

I commute on mine and train every other tuesday on it. I do intervals with it. It is a 46 - 15 and is a good work out on flats or slight up hills even better. I live in the mountains so it is hard to find a good place but over by this airport near me is a nice flatish section that I just go up and back on.