CentOS 7 RPM Specfile for Opendigitalradio's ODR-DabMux which is part of RaBe's DAB / DAB+ broadcasting package collection.
There are pre-built binary packages for CentOS 7 available on Radio RaBe's OBS DAB / DAB+ broadcasting package repository, which can be installed as follows:
curl -o /etc/yum.repos.d/home:radiorabe:dab.repo \
http://download.opensuse.org/repositories/home:/radiorabe:/dab/CentOS_7/home:radiorabe:dab.repo
yum install odr-dabmuxcp /usr/share/doc/odr-dabmux-1.0.0/example.mux /etc/odr-dabmux/dab.mux
systemctl start odr-dabmux