I port the headphone output of my Flex into a Ramsey FM transmitter and run that into a couple of clip leads for an antenna. I listen around the house on a boombox in the kitchen or livingroom, or clip on my little sansa mp3 player with it's built in FM receiver and plug my ear buds into it and wander anywhere in the house. When I'm going outside, I cliplead the FM transmitter output to the center pin of my 2 meter antenna coax. Then I can hear it most of the way around the yard while doing outside work such as mowing the lawn. If I put the earbuds in my ear under a pair of noise protectors, it works pretty well even with the lawn mower.
There are also a number of programmable FM transmitters of various wattage available on that epay place. I think I picked up the ramsey kit for around $20 (not the synthesized fancy version). It drifts a bit, especially if I change the antenna load on it, but I keep a diddle stick next to it and zero it on the receiver frequency and it's good for a couple of sessions. Someday I'll get a synthesized one, but for now good enough is the enemy of better.