The HNM/HNS video and APC audio files are from Cryo Interactive games 
Atlantis 2, Odyssee (Sur Les Traces d'Ulysse) and Chine. Note that APC files 
serve as the soundtracks for the HNM files of the same filetitle.
DLLs are Cryo video decoder DLLs needed to play back the HNM/HNS files.