The homepage for sys-apps/hdump is defunct. A possible replacement could be at http://developer.berlios.de/projects/hdump/ Reproducible: Always
There is also an "old" bio page for Jörg Schilling which lists hdump and count (Bug: 185456) at: http://cdrecord.berlios.de/old/private/ The project page looks like the best bet since the bio only links to source.
Fixed, thanks