Yuru Yuri CDs
The seiyuu group Nanamori Chuu Gorakubu (七森中☆ごらく部) sings the opening and ending songs.
The Yuru Yuri bluray discs comes with an audio CD which contain some songs and audio drama.
There were Yuru Yuri character pops signed by the seiyuu on display at the Toranoana Store in Akihabara.
[Yuru Yuri CDs]
similar web/CD pages