A couple of days ago, Andrew asked the following: I wasn't sure whether he was asking about fixing existing material or avoiding the problem in the first place, so I asked him. He replied that he was interested in fixing existing material. He finds, as I do, that the "sound inside the head" problem tires him out as he listens. There are headphone amplifiers that help fix this problem by by signal processing means. There may be software, but I'm unaware of a any specific software. I have experimented with some techniques, but none were satisfactory compared to preventing the problem in the first place (for example, the engineered IR's I've produced or simply making binaural recordings at the start). Is anyone else interested in a software solution to this problem of fixing existing material? Does any software exist that emulates these binaural headphone amplifiers? If there is no Linux software yet interest, I may spend some time going back to working on this problem, time permitting. I would think that there should be a lot of interest, but apparently very few people in general are familiar with the improved sound of binaural audio images. Again, a fix is going to be far short of doing it right in the first place. It also colors the sound. Thanks for replies and regards to all, Dave.