The stereo convolver plugin for fb2k
Go to one of these sites to listen to various examples of recorded HRTFs.
I have personally used IRCAM's site. Find a subject whose record circles around your head in a flat plane, not going up/down, not changing distance, or at least most close to that. Download a zip with records of his HRIR's.
Go to compensated folder.
File name format is as follows:
R is the same for all IIRC, azimuth is the left-right angle (030 is 30 degrees to the right, 330 is 30 degrees to the left), elevation is vertical angle.
You probably won't need any elevation, and use a file that represents left speaker for the left channel (I use T330), and right speaker for right channel (T030).
The slider below is just gain, it's set by default to -6dB so there would surely be no clipping. Probably better leave it as is and increase volume with other controls to compensate.