From the developer: "MP3FireWriter was written from the ground-up to provide flexible, on-the-fly Disc-at-Once Audio CD creation features. Burns audio tracks directly to CDR without using any additional hard drive space. Create your own audio discs with as simple or as complex of a mix as you like. Set fade in/out, cross-fade (track overlaps), silence trim, and normalization for each track INDIVIDUALLY. Generic CD mix setting are a thing of the past... unless of course you want them...it's up to you. You can tweak your audio CD mix, and then preview the mix in real-time exactly as it will be burned to CD. This 'Exact Preview' is accomplished by utilizing our unique audio preview technology to simulate every mix, cross-fade, and adjusted audio setting BEFORE you burn the disc. We have taken great care to provide maximum performance, and the best audio quality possible. Works with most CD recorders. "