Apparently v2.13.2 contains fixes just for Win32, but 2.13.1 contained fixes for all platforms: TiMidity++ version 2.13.1 is out. This version includes various bug fixes, as well as some feature improvements such as support for libao, FLAC, Speex, and GTK+2. We have released TiMidity++ version 2.13.2. This is a bug fix release that fixes the compile error on Win32 platform. All other platforms aren't affected to this, so you don't have to update unless you are compiling TiMidity++ on Windows. Reproducible: Always Steps to Reproduce: 1. 2. 3.
in portage