Many audio editor or processing platforms have a "Parallel" feature. For example - audio track, music and sound effects. Few have "linear" splicing or editing option- for example intro for podcast episode, episode itself, any call to action and outro. Typically the first and last pieces are the same. Upload them once, select them from the drop down menu, and use the intro/outro for as many episodes you like. Makes a repetitive task easy. They have of course added many other features over time. Review collected by and hosted on G2.com.
Site is slow at times, interface is not the sharpest. The clunky interface is somewhat made better by the little 'robot' mascot which appears on the screen. The audio processing may take lot longer for heavier files. Review collected by and hosted on G2.com.