[ffooky]

Select a length of the waveform (up to 23.8 seconds in length..hence the stretch thing) and go to the View menu. Select Plot Spectrum and Bob's your uncle. I must say I find it the easiest FA to read, though the SA is merely sufficient. I haven't really tried any of the other progs apart from EAC but I find it picks noise reduction from MPEG encoding pretty well...the roll off with NR usually seems to have a stair step effect even though the SA looks like boxed standard lossy.