I bought the Fostex MR8HD multitrack recorder yesterday and can get everything to work fine. Except when i try to use a microphone to record with. I am using a microphone that i use with the computer. I bought a jack adapter so that i could plug it into the 1/4" input on the recorder. But it wont work, it isnt getting any sound. Is that microphone not compatible with it, or am i just stupid?