I record sound on a Zoom H4N in .wav 48Khz 24bit.
I experience the exact same audio problem placing a file on the timeline using Vegas Pro 64bit build 714 for Win7.
I also would be very happy to know about a fix, not a workaround (I will go try the AIF conversion to “survive”), as conversions are a hazzle, especially when the source is a standard ubiquitous format.
Best regards
Leif Knudsen