Other Formats

Dont really 'collect' any format other than Compact Discs, just happened to have below listed items in my collection.

Concert DVDs

A. R. Rahman In Concert, USA - 2000 - RPG / Saregama - RPG 1181
A. R. Rahman Live In Concert, USA - 2000 - DVD Video - DV 0005 ; Features Hindi songs only
A. R. Rahman In Concert Dubai - 2000 - Video Sound - VS0201 DVD333
A. R. Rahman Live In Concert, Delhi - 2008 - Devis DVD
A. R. Rahman & The London Phiharmonic Orchestra - 2010 - Southbank Centre - The Royal Festival Hall ; Promotional DVD
Magical Melodies of Rahman - 2015 - Saregama / Sony DADC - SD0004-05 / S6111S00004 - Live in Concert in USA 2000 ; Bonus CD: My 14 Favorites A. R. Rahman

Film / Song Video DVDs

Lagaan / Chale Chalo : The Lunacy of Film Making (2 Disc collector's edition) - 2001 - Excel Home Videos - EHV 1082
A. R. Rahman Hits Vol 2 - 2001 - Ayngaran - AYNDVD 050
Salaam Bombay Dreams - 2003 - Eagle Eye Media - EE 39033 9 - Behind the scenes story of 'Bombay Dreams' musical
Best of A. R. Rahman - 2003 - Shemaroo - SHE DVD 008
Masti Ki Paathshala - 2006 - Sony BMG - 82876 80482 9- Music videos from 'Rang De Basanti' & making of the music
Mukkala Muqabala Laila : Dance Beats of AR Rahman Vol 2 - 2008 - Symphony Home Video - SHVDVD 076
Deepa Mehta Elements Movie Trilogy (Collector's Edition) - 2008 - Eagle - EDVDD 2264 - Fire / 1947 Earth / Water
A World of Music - 2009 - Sony Music - 88697 56816 9 ; Features ARR Live at Guru music launch
A. R. Rahman Signature Collection - 2009 - T-Series - TSDVD 2526
Bollywood Heights - 2012 - T-Series - TSDVD 3558 

VCDs

A. R. Rahman's Greatest Hits, Vol 2 - 1997 - Columbia Films - TS 1002C

Cassettes 

Roja (Hindi) - 1992 - Magnasound / OMI - C4US 0722
Pudhiya Mugam - 1993 - Magnasound - C6US 0653 ; Features theme music - unreleased on CDs 
Padmavyuham - 1993 - Magnasound / OMI - C6US 0730
Gangmaster - 1994 - Magnasound / OMI - C6US 1039
Super Police / Gangmaster - 1994 - Magnasound / OMI - C6OS 1074
Super Police (Telugu) - 1994 - Magnasound / OMI - C6US 1079 
Bombay (Telugu) - 1995 - Polygram / Music India - 4227 330
Rangeela (Hindi) - 1995 - Tips / Dashmesh International - DE 27111
Jeans (Tamil) - 1997 - Pyramid - PYR 8689 - Jeans / Ratna
Premante Pranamista - 1999 - Aditya Music - AM 275
Muthu Maharaja - 2001 - RPG / Saregama - GNMUK 610095 ; Features theme music

Vinyls

Jana Gana Mana - 2000 - Sony Music - 88697 95297 1 
Guru - 2007 - Sony Music - 88697 93627 1
Jhootha Hi Sahi - 2010 - RPG / Saregama - PSLP 10002
SuperHeavy - 2011 - Universal Republic Records - B0016107-01
Jab Tak Hai Jaan - 2012 - YRF Music - YRM LP 77000

Few other vinyls (Vande Mataram, Lagaan, Rang De Basanti, Jodhaa Akbar) are with a friend.

MP3 CDs (Compilations) 

Roja Janeman - 2004 - T-Series - MP3 398 - Lakeer / Tehzeeb / Nayak / Rangeela / Sapnay / Roja / Hindustani / Doli Saja Ke Rakhna / Jeans / 1947 Earth / Khel Khiladi Ka
Hits of A. R. Rahman (Telugu) - 2005 - T-Series - MP3 928 - Merupu Kalalu / Iddaru / Bharatheeyudu
Telugu Hits of A. R. Rahman - 2006 - Aditya Music - AMIL MP3 8013 - Boys / Yuva / Nani / Nee Manasu Naaku Telusu / Oke Okkadu / Baba / Jeans / Premante Pranamistha / Amrutha / Paravasam
Journey With A. R. Rahman - 2007 - RPG / Saregama - M48017 - 25 Hit songs from Telugu Films
A. R. Rahman Greatest Hits - 2007 - Sony Music - 88697 11583 2
A. R. Rahman's Music Forever: Only You - 2007 - 5 Star Audio - FA MP3 033 - Mudhalvan / Kadhalar Dhinam / Enakku 20 Unakku 18 / Anbe Aaruyire
Musical Journey of Asha Bhosle, RD Burman & AR Rahman - 2007 - Alfa Music - MP3 3043 - Instrumental hits from Hindi films
A. R. Rahman The Musical Genius - 2008 - Sony Music - 88697 51451 2
Yo Dil Se Remix - 2009 - Venus - VACDGX 2085 - Dil Se (Remix) / Yuva / Pukar / Humse Hai Muqabla / Duniya Diwalon Ki
Melody Marvel - 2009 - Aditya Music - AMIL 18004 - Bombay / Padaiyappa / May Maadham / Indian / Karuthamma / Love Birds / Kizhakku Cheemayile / Pavithra / Rangeela
Miracle Melodies - 2009 - Aditya Music - AMIL 18005 - Muthu / Gentleman / Duet / Sangamam / Mr Romeo / En Swasa Katrae / Uzhavan / Iruvar
Golden Collections of A. R. Rahman Vol 3 - 2009 - Aditya Music - AMIL MP3 18020
Golden Collections of A. R. Rahman Vol 4 - 2009 - Aditya Music - AMIL MP3 18021
A World of Music - 2009 - Sony Music - 88697 53859 2 
A. R. Rahman & Yuvan Shankar Raja Hit Songs - 2009 - Star Music - SMCD 276
Oscar Rahman : A Tremendous Music Experience - 2009 - T-Series - MP3 2780 - Merupu Kalalu / Iddaru / Bharatheeyudu
A. R. Rahman Collections 1 - 2009 - Alai Osai - ALMP 1001 - New / Boys / Jodi / Kadhalar Dhinam / Super Police / Roja / Baba / Enakku 20 Unakku 18 / Manitha Manitha
A. R. Rahman Collections 2 - 2009 - Alai Osai - ALMP 1002 - Taalam / Kadhal Virus / Mudhalvan / Kadhal Desam / Uyire / Ratchakan / Andhimantharai / Taj Mahal
A. R. Rahman : A Musical Journey - 2010 - Sony Music - 88697 84445 2
A. R. Rahman Signature Collection - 2010 - T-Series - MP3 3750
Roja Roja : AR Rahman Hits - 2011 - RPG / Saregama - M48112 - Narasimha / Premikula Roju / Priyuraalu Pilichindi / Rhythm / Sakhi / Thenaali / Vanitha
The Spirit of Music - 2012 - Sony Music - 88691 95258 2
My #1 Rahman - 2013 - Sony Music - 88843 01835 2
#NowPlaying AR Rahman Hits - 2014 - Tips - TMP3 70327

MP3 CDs (Soundtracks) 

Sajni (Kannada) - 2007 - Akshaya Audio - ALSF MP3 58 - Doubble Deccar & Other Kannada Hits
Vinnaithaandi Varuvaayaa & A. R. Rahman Hits - 2009 - Sony Music - 88697 64887 2
Raavanan & Other Hits - 2010 - Sony Music - 88697 73461 2
Komaram Puli - 2010 - Sony Music - 88697 76144 2 - Komaram Puli & Other Hits Vol 1 ; Bonus CD - Aarya 2
Maha Muduru - 2010 - Sony Music - 88697 76145 2 - Komaram Puli & Other Hits Vol 2 - Komaram Puli / Ye Maaya Chesave / Oum Shanthi / Darling / Khiladi / Maha Muduru / Maa Vaadu / Mahathma / Aarya 2 / Villain
Jhootha Hi Sahi & A. R. Rahman Hits - RPG / Saregama - M10010 - Jhootha Hi Sahi / Thakshak / One 2 Ka 4 / Saathiya / Chor Chor / Muthu Maharaja / Sapnay
Rockstar & Other Hits - 2011 - T-Series - MP3 4591
Takkari Donga Chukkani Chukka - Nelluri Nerajana - A. R. Rahman Hits From Telugu Films - 2011 - Aditya Music - AMIL MP3 8517 - Sivaji The Boss / Oke Okkadu / Jeans / Boys / Nani / Gurukanth / Amrutha / Baba / Jodi / Love Birds / Nuvvu Nenu Prema / Nee Manasu Naaku Telusu / Paravasam / Premante Pranamista / Yuva / Takkari Donga Chukkani Chukka
Jab Tak Hai Jaan - 2012 - YRF Music - YRM MP3 11000
Kadal & Other Hits Vol 1 - 2013 - Sony Music - 88765 44551 2
Kadal & Other Hits Vol 2 - 2013 - Sony Music - 88765 44552 2
Kadal & Other Hits Vol 3 - 2013 - Sony Music - 88765 44553 2 ; A. R. Rahman Hits
Kadali & Other Hits - 2013 - Sony Music - 88765 45819 2
Maryan & Other Hits Vol 1 - 2013 - Sony Music - 88883 73809 2
Maryan & Other Hits Vol 2 - 2013 - Sony Music - 88883 73810 2
Maryan & Other Hits Vol 3 - 2013 - Sony Music - 88883 73812 2 ; A. R. Rahman Hits
Ambikapathy & Other Hits Vol 1 - 2013 - Sony Music - 88883 75790 2
Ambikapathy & Other Hits Vol 2 - 2013 - Sony Music - 88883 75791 2
Raanjhanaa & Other Hits - 2013 - Sony Music - 88883 75911 2
Kochadaiiyaan & Other Hits Vol 1 - 2014 - Sony Music - 88843 05472 2
Kochadaiiyaan & Other Hits Vol 2 - 2014 - Sony Music - 88843 05473 2
Kochadaiiyaan & Other Hits Vol 3 - 2014 - Sony Music - 88843 05474 2
Kochadaiiyaan & Other Hits Vol 4 - 2014 - Sony Music - 88843 05475 2
Kaaviya Thalaivan & Other Rahman Hits - 2014 - Sony Music - 88875 01805 2
I & A. R. Rahman Hits - 2014 - Sony Music - 88875 02841 2
I Manoharudu & Other Hits - 2015 - Sony Music - 88875 06278 2

Books

Slumdog Millionaire - 2008 - Hal Leonard - HL 00313458 ; Written Piano / Vocal / Guitar notes
A. R. Rahman : The Musical Storm - 2010 - Penguin Global - ISBN 0670083712 - Kamini Mathai
A. R. Rahman : The Spirit of the Music - 2011 - Om Books International - ISBN 9789380070148 - Conversations with Nasreen Munni Kabeer ; Bonus CD - Connections (Nokia)