user Bearxor had problems with using nzbget on his fun_plugged device. After some chatting in the comments he told that he is using the DNS-321 and not the CH3SNAS or DNS-323, these devices do have different toolchain and need to be compiled differently.
So for users with the Conceptronic CH3MNAS or D-LINK DNS-321 who want to have a 5 to 10 minutes installation of nzbget: download it here and get the ch3mnas-nzbget.tgz file for the installation instructions:
get the instructions here