Disparity between exported and played sound

This might be a very silly, easy question; if so, forgive me. I've been having problems with the wav's I've been exporting from Audiomulch. They pulsate and are very choppy-sounding, rather than smooth and continuous, throbbing rather than playing all the way through smoothly; it sounds like either my bpm is off somewhere (dunno where; I tried to fix that anywhere I could to no avail) or it's hitting the same note over and over. I'm exporting these files to 192Kbps wav's- prior to my problem, there was no issue whatsoever (though I've had this same problem in the past). The sound plays back normally in Audiomulch, it's just the exported product I'm having problems with. Any suggestions?