It works with Reaper but requires Kontakt (even the free version) so you would need to install it first. Then to export it works the same as other Kontakt libraries like DrumMic'A, SDSE will display check boxes to select the pieces that you'd like to export: open SDSE and Reaper, Select Kontakt in the list, load GetGood Drums Halpern v2 in Kontakt, adjust the sound, select the pieces with the check boxes, click Export.