Hi i've been given a Sony MZ-R501 recording minidisc. It only has a LINE in not a MIC in and so records fine from line sources. Is it possible to have some microphone set up to use it to, say, to record live music? I've plugged a Electret tie-clip microphone into it and I get a very weak signal through. Obviously if I should probably just go out and buy a minidisc with a MIC in socket - but given what I've got, is there any way it is possible to get a reasonable signal from a microphone - and if so , how?