I would run
to check for 32/64 bits unless you know that already, and then
ln -s /path/to/librtmp.so.1 /usr/lib(64)
Fix those with paths and the correct libdir. That should get you going. The kosher way to do it is to add the rtmp directory to /etc/ld.so.conf and run ldconfig.
32 bit binaries will not use 64 bit libs and vice versa.
EDIT: HA HA, I see you sorted it as I was typing.