I have been using SMS for several years but am running into a problem that I can't figure out. I am using Platinum 6.0. When using a microphone (one is the standard one that came with my computer with a pin plug in and the other is a Logitech with a USB plugin), on the voice recording line it is showing a recording level clear over to 14. The level meter runs from 72 on the left to 0 on the right. When I "arm" the record button it immediately jumps(color green across) over to about 14. This is happening if a microphone is plugged in or not. If I record, I am getting a big hum sound (modulation?) and if I lower the volume it also lowers the voice I have recorded. I have adjusted about everything I can think of or at least find and can't get this to record voice without this humming. There must be a setting somewhere that I haven't found. In the past I have done several projects successfully with the microphone but can't seem to get this problem fixed. Please help I am going nutso.