Hi, I have tried to rip a tune on Audacity and am having an issue with the recording. During an instrumental part where there is no bass/beats the volume is bright and loud, as soon as the bass and beats return it's dampened and goes a touch quieter. My levels are all spot on and I'm going from the record out on my mixer through an Behringer UCA 222 USB interface and a HP laptop. Anyone got any ideas? Cheers.