I am currently recording all my old vinyl LP’s onto my computer using an IONiTTUSB turntable. Previously when I was using Windows XP I had no problems. I now have a new computer using the Windows 7 system. I have downloaded the new Audacity software.
When trying to record, the sound is very distorted even when the input volume is set at its lowest. I have tried to decipher some of the help tutorials, but just end up getting more confused.
Can anybody explain, in simple terms please, what I may be doing wrong here? 
The first thing to check, look on the underside of the turntable. Some Ion turntables have a volume knob (some don’t).
Also check the recording level settings in the Windows Sounds Control Panel http://wiki.audacityteam.org/wiki/Mixer_Toolbar_Issues#vistacp
Some 12" DJ mixes are recorded extremely loud and may be too loud for the Ion to handle. Unfortunately there are no settings that can fix that as it’s a hardware limitation.
Oh look. A little knob with “Gain” written on it. I wonder what happens when I turn it down.
EUREKA!!! 
. It works.
Many thanks Steve.