What the hell!? They (dynamically) compressed the hell out of the audio before encoding it to MP3! The original broadcast files I saved through HiBiKi internet radio do not have this problem!! Times like this, I wish I had power (i.e. lots of money). I'd find out how this happened and make whoever is responsible apologize and reissue the CDs.
Contains broadcast episodes 1 through 12 in MP3 format. Note episode 4 was public recording at "Dengeki Bunko Aki no Sai 2013."