multimedia/gtkpod version 2.0.0 fails to build: ld duplicate symbol

[rmstonecipher@…]

Attached please find an updated Portfile .diff and the main.log showing the build error which causes gtkpod to fail to build:

:info:build   CCLD   libgtkpod.la
:info:build ld: duplicate symbol _CONF_ID in .libs/filetype_iface.o and .libs/gtkpod_app_iface.o
:info:build collect2: ld returned 1 exit status

I have attempted to troubleshoot this problem by ​writing to the upstream project's email list; however the suggestions from that project's lead did not resolve the issue.
Help from someone with a better understanding of dependencies and ld would be appreciated.

Thanks,
Ryan Stonecipher