Cool project! Unfortunately, it doesn't seem to work on x86. Looking at the Kodi log files, I can only catch two lines from inputstream.airplay intermittently when the receiver seemingly attempts to start up, and that's the fact that seemingly libplist-2.0-so.4 is missing.
The two lines found can be found below:
Code
[inputstream.airplay] started receiver (pid 2638)
[inputstream.airplay] receiver: /storage/.kodi/addons/inputstream.airplay/bin/airplay-receiver: error while loading shared libraries: libplist-2.0.so.4: cannot open shared object file: No such file or directoryI'll keep digging at it, but was hoping maybe you or someone else has a lead on what else might need to be done for x86 to work correctly, as I'm hoping to turn my 3 year old powerful laptop and TV into a nice little home media setup 
Thanks a bunch!