I-Doser illegally sold a compiled-only version of SBAGen, an open-source utility for synchronizing brainwaves. The I-Doser data files have been decrypted. This means that you can use a command-line SBaGen for Mac, Windows, and Linux to play the files or generate WAV files. You can also get an android version, and listen to them on the go.
If you get excited by this idea, you might wanna checkout this which does the conversion for you, without anything installed!
Download SBaGen for Mac, Windows, and Linux, and put the sbg directory from this repo in the same folder as sbagen binary. Run it on the command-line, from that directory, like this:
./sbagen lsd.sbg
Download the app using this qr code, which is this open-source sbagen android app. Make sure you can install unsigned applications (in your phone's settings.) Put the sbg folder on your phone's SD card, and run the app. Locate the sbg folder, and choose an idoser file. Press the button at the bottom of the "Sequence" tab to run it.