Comment 1 for bug 1478417

Hello,
You have an old version of GLIB library.
The function g_type_check_instance_is_fundamentally_a() was added to the gtype and glib in spring 2014.

I do not know the exact version of glib that is required.
Check the version of GLIB with:

$ ldd --version
or run:
$ for l in $(locate libc.so.6); do $l; done

I run Ubuntu 15.04 and it has GLIB version:
Ubuntu GLIBC 2.21-0ubuntu4

Notice: This is a general problem in your system. It is not particularly related to the audio-recorder.
Have you added additional PPAs for GTK3?
Have you considered to make a new, pure installation of your Mint?