I nearly passed on this software because of misleading reviews. Thankfully I didn’t! Common complaints are that it’s too expensive, it crashes often, and isn’t compatible with new operating systems. I’ll address each issue here: The software works so well that it’s the best $30 I’ve ever spent; I have a 17,000 song library and it only crashed a few times (and when it does it’s not a big deal as you simply restart where it left off); and, it worked perfectly on my Mac using Catalina OS. Honestly, the quality of the volume leveling is amazing. I always listen to my music in random shuffle mode and the irregular volumes of my ripped MP3 files has been a major bane for years. I’m ecstatic with the results of this software.