I am using the Windows version of Studio One 3 (Professional) on a PC with Windows 10 with an I7 processor with 4gig Ram... I can make a great sounding WAV file for backing tracks... however, if I export the file to MP3 (128bps), about half the time there is a distracting "roaring" sound, like something is about to feedback (it is in the mid range). All files are normalized and nothing is allowed to go over 0db. As an experiment, I tried exporting using two other WAV to MP3 converter programs, and the problem isn't there... I suppose that is a fix... however, I would like to do this direct. Are all WAV to MP3 algorithms the same? Would a different bit rate change that? Should I adjust the eq in a certain range to stop the algorithm from amplifying the "noise"?