Picked up a new Sony NetMD in an Argos sale a couple of months ago as a replacement for my ancient portable from around 97. Whereas my old machine had a direct mic input for recording from a (passive) microphone does not. I assumed that just plugging into the line input would work but it doesn't. Can anyone tell me how to get around this? Would buying some sort of active microphone work? Can anyone recommend a good active mic of the clip on variety so that I can continue to bootleg concerts?