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Here's the release dates/track listings for the related music for the show/Lite episodes:

Main OP: Sparkling Daydream sung by ZAQ:
Released on 2012/10/24; LE 1,800 yen (+DVD)/ RE 1,300 yen
Track listing:
1. Sparkling Daydream (Chuunibyou Demo Koi ga Shitai! OP theme)
2. Monochrome Monster
3. INSIDE IDENTITY
4. Sparkling Daydream (off vocal)
DVD: Sparkling Daydream Music Clip

Main ED: Inside Identity sung by Black Raison d'être:
Released on 2012/11/21; 1,200 yen
1. INSIDE IDENTITY (Chuunibyou Demo Koi ga Shitai! ED theme song)
2. OUTSIDER
3. INSIDE IDENTITY (no vocals)
4. OUTSIDER (no vocals)

All songs are composed/arranged/lyrics written by ZAQ

Mini Vocal Album Dark Iris Musical Grammar:
Released on 2012/12/26; 2,600 yen
Track listing:
1. Kimi He (To You) by ZAQ (Lite OP)
2. Kakusei Ragnarøk - Ankoku Mokushiroku (Awakened Ragnarøk - The Dark Revelation) by Rikka Takanashi (Maaya Uchida)
3. Deinabayotte☆Amsarimo (Em Llac T'nod☆remmes-Irom) by Shinka Nibutani (Chinatsu Akasaki)
4. Hironebu Diary (Nap Club Diary) by Kumin Tsuyuri (Azumi Asakura)
5. Dark Death Decoration by Sanae Dekomori (Sumire Uesaka)
6. Shikkoku ni Odoru Haou Bushi (The Dark King's Stanza Leaps in Darkness) by ZAQ (Lite ED)

Original Soundtrack Sound of a small love & chu-2 byo story:
Released on 2013/01/09; 3,300 yen
Disc 1:
1. Sparkling Daydream (TV Size) by ZAQ
2. Welcome to the Chu-2-byo world!
3. Chuunibyou Towa Nan Zoya (What the heck is Chuunibyou)
4. Shinbi no Shoujo to no Deai (Meeting the Mysterious Girl)
5. Akogare no Futsuu Seikatsu yo (My Longed-for Normal Life!)
6. Cute and chu-2 byo
7. Ukare Egao de Go! (Go with your Festive Smiling Face!)
8. Chu-2-byo is cool!
9. comical boys
10. The Dark Hero
11. Nikumenai Shoujo (A Girl You Can't Hate)
12. Umakuikanai Koto mo Arutte Monde (It's because "Something Didn't Go Well")
13. Teitai na Kanjyou (Congested Feelings)
14. Yuukure to Yorisou Kanjyou (Twilight and Feelings of Closeness)
15. Koudou no Sakini Nanika ga Aru Noda (It's What You Did Earlier)
16. Kakkari Gakuseijidai (Disappointed School Days)
17. Kanjyou, Sono Namae wa "Hiai" (Those Feelings are Named "Sadness")
18. Kokoro no Sukima ni Fuan ga Yattekuru (Anxiety Slips into Your Heart's Crevices)
19. Sonna koto Mo Aru Yo ne (It's That Kind of Thing Too)
20. Kitaishichatte Ii Ndesu (It's Alright to Expect That)
21. Oioi, Daijyoubu ka? (Hey, Are you Alright?)
22. Watashi Nimo Mieru (I Can Also See It)
23. Maou Kourin ~Ichi~ (The Devil King Descends ~The First~)
24. Maou Kourin ~Ni~ (The Devil King Descends ~The Second~)
25. Maou Kourin ~San~ (The Devil King Descends ~The Third~)
26. Heiwa na Nichijou ga Ichiban no Shiawase (Peace And Ordinary Are The Happiest Feelings)
27. Mousou Dekomori Senritsu ~Hokan~ (Dekomori Delusional Tune ~Complementation~)
28. Mousou Dekomori Senritsu ~Kakushin~ (Dekomori Delusional Tune ~Reform~)
29. Mousou Dekomori Senritsu ~Gattai~ (Dekomori Delusional Tune ~Combination~)
30. Shite Ashita mo Chuunibyou wa Tsuzuku node Atte (Continuing to Meet Chuunibyou Tomorrow As Well)

Disc 2:
1. Mouzou Battle ~Karei Kaishin~ (Delusional Battle ~Splendidly Magnificent~)
2. Mouzou Battle ~Catharsis~ (Delusional Battle ~Catharsis~)
3. Mouzou Battle ~Seisen~ (Delusional Battle ~Crusade~)
4. Mouzou Battle ~Densetsu~ (Delusional Battle ~Legend~)
5. Surechigau Kokoro to Kokoro (Hearts Passing By Another)
6. Atatagasa ni Kurumarete Hi wa Kureru (The End of Warm Days Around Us)
7. Hajimari no Tane (A Seed's Beginning) sung by ZAQ in episode 8
8. Fukashi Kyoukaisen wo Sagashite (Search for the Ethereal Horizon)
9. Achiruna! (Don't Fail!)
10. Kimi no Tonari ni (Around You) sung by ZAQ in episode 10
11. Miagete Goran Yoru no Hoshi Wo (Please Look To The Stars Above) sung by Rikka Takanashi (Maaya Uchida)
12. Kanashi Mousou Battle (A Sorrowful Delusional Battle)
13. Kanashi Mousou Battle ~piano~ (A Sorrowful Delusional Battle ~piano~)
14. Tebanashita Mono wo Torimodoshi ni (Recovering What Was Lost)
15. Omou Mono Douji no Saikai (Starting to Think Like Everyone Else Again)
16. Sore wa Hontou ni Atta Nda (That is Coming to Reality)
17. Rikai to Aijyou to Yasashii Manazashi (A Look of Compassion, Love, and Kindness)
18. Koi wa Tsuzuite Iku (Love Will Continue)
19. Youkuhen ~Chuunibyou World no Kaimaku~ (Preview ~Raising The Curtain to The Chuunibyou World~)
20. Youkuhen ~Chuunibyou no Shinjitsu~ (Preview ~The Truth of Chuunibyou~)
21. Keitai Gal Game (Cell Phone Dating Sim)
22. Eigaongaku Teki Romance (Romance Movie-esque Score)
23. Sparkling Daydream ~piano~
24. INSIDE IDENTITY ~piano~
25. Chuunibyou Eyecatch ~Mysterious~
26. Chuunibyou Eyecatch ~Fuan~ (Eyecatch ~Anxious~)
27. Chuunibyou Eyecatch ~Comical~
28. Chuunibyou Eyecatch ~Gag~
29. Chuunibyou Eyecatch ~Romantic~
30. Chuunibyou Eyecatch ~Utsukushisa~ (Eyecatch ~Beautiful~)
31. INSIDE IDENTITY (TV size) sung by Black Raison d'être

Radio show set vol 1:
Released on 2013/01/25; 3150 yen
Disc 1: Newly recorded radio show
Disc 2: First 10 radio shows (mp3 format)

Drama CD:
Details will be announced at a later date