My students and myself were impressed with the Stanford University release of HiFiLES, a large-eddy simulation solver for turbulent flows. We were able to use it successfully in our Office of Naval Research Grant. In fact, our modifications were released for free with an in-built acoustics solver. These codes are free of charge to use and available to the community. One can read our use of the solver at http://saemiller.com/publications/Shen_Miller_JTCA_2020_preprint.pdf. Grab the source and try it yourself on GibHub at https://github.com/weiqishen/HiFiLES-solver.