Hum from Florescent light


I have a florescent that puts a nasty hum in my system. Its a light that plugs into the wall. Is there a cheap easy way to isolate this light?
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Thanks, Cornfed, I thought I might have heard that halogen lamps created problems, but I couldn't really remember. Some of them are so darn cute, I might have wasted some time trying one.
Sometimes fluorescent noises can be tamed using the Audio Prism wall-warts. Have seen this demo'd & it did work, but have never tried it personally.
Many thanks to all who responded and to Sugarbrie for going out of his way to get the info. It looks as if is safest to replace the light! Thanks again