Looks like HiBiKi isn't going to split the new recordings into multiple tracks. Oh well. It's no different from a regular broadcast.
Near the end, Washizaki Takeru and Misawa Sachika collaborate to create a song, with Washizaki-san playing the acoustic guitar. It's actually kind of fun, especially the lyric. And because it was put on the CD as is, it has very good sound quality, although it's basically monaural.
Instead of an additional CD-ROM for the MP3 data, they just put both audio track and the data track on the same CD, using the CD-EXTRA format. Not a bad idea.