Here is a comprehensive list of songs of Geeta ji on youtube. Many thanks to HB and Pinky for sharing so many links.
Dharati se door gore - Sangdil
http://www.youtube.com/v/_YBUdcoenP8Darshan pyasi aayee dasi - Sangdil
http://www.youtube.com/v/wfUt03ttn3AAye dil hain mushkil - CID
http://www.youtube.com/v/UZaUyszOFtAThandi hawa kali ghata - Mr and Mrs 55
http://www.youtube.com/v/H8Wc93YnAaIKhayalon mein kisi ke - Baware Nain
http://www.youtube.com/v/CN2kDfIiBbABabuji dheere chalana - Aarpaar
http://www.youtube.com/v/A35PbjcKoBAJaane kahan mera jigar gaya ji - Mr and Mrs 55
http://www.youtube.com/v/cNqscrhjCkwAankhon hi aankhon mein - CID
http://www.youtube.com/v/--sA1FZ7slYRimjhim ke tarane leke - Kala Bazar
http://www.youtube.com/v/kNs3wb6niO8Sun sun zalima - Aarpaar
http://www.youtube.com/v/4iew-z4Ru60Aye dil aye deewane - Baaz
http://www.youtube.com/v/vyIwD3IGwIkJaane kya tune kahin - Pyasa
http://www.youtube.com/v/GHfGON2rnhQAaj sajan mohe ang laga - Pyaasa
http://www.youtube.com/v/DyixNgPXs7EHum aap ki aankhon mein - Pyasa
http://www.youtube.com/v/8UkEcMxjGO8Waqt ne kiya - Kagaz ke Phool
http://www.youtube.com/v/t0rq-sooVPQHaule haule ek bhi na ghungroo bole - Jwala
http://www.youtube.com/v/m2XozUDG5PQDekho ji dekho - 12 O'clock
http://www.youtube.com/v/xOHbCeu4Gg8Aye dil mujhe bata de - Bhai Bhai
http://www.youtube.com/v/9-sn0oX-6-QChupake se mile pyase pyase - Manzil
http://www.youtube.com/v/3Q0OKdHGaq0Yeh lo main hari piya - Aarpaar
http://www.youtube.com/v/MLpObEQBaegBechain dil khoyi si nazar - Yahudi
http://www.youtube.com/v/EBOqizrT2t8De bhi chuke - Jaal
http://www.youtube.com/v/v3fDMgCiX0IZara saamne aa - Baaz
http://www.youtube.com/v/LFYbMqgvL4YChal diye banda nawaz - Mr and Mrs 55
http://www.youtube.com/v/C9y0WqQ5GngUdhar tum haseen ho - Mr and Mrs 55
http://www.youtube.com/v/9JbQs3L7A8cHoon abhi main jawan - Aarpaar
http://www.youtube.com/v/eirh_GRYvQcJaate Ho To Jaao Par (Milap)
http://www.youtube.com/watch?v=9_-NSulrNsMBachana Zara Ye Zamana Hai Bura (Milap)
http://www.youtube.com/watch?v=iMFdUUgg7GkDekha Na Jaaye, Socha Na Jaaye (Mr.India)
http://www.youtube.com/watch?v=gluIlwXkepkKoi Door Se Awaaz De (Sahib bibi aur ghulam)
http://www.youtube.com/watch?v=CK6L-ydZdLwAyee Re Ghir Ghir Pehli Pehli Badariya (Miss Mary)
http://www.youtube.com/watch?v=MzZY3VO1X3oPardesi Se lag gayi preet re (Jaan Pehchan)
http://www.youtube.com/watch?v=-y0OMyTlS0EMerii chhoTii sii bahan (Toofan Aur Diya)
http://www.youtube.com/watch?v=rkG02Nkxxp8Jhuk Jhuk Jaye Nazar (Aab-e-Hayat)
http://www.youtube.com/watch?v=xKIV_mZGOFMNaina Mila Ke dil chheena(Jaan Pehchan)
http://www.youtube.com/watch?v=am0GdUzC7z4Mera Dil Meri Jaan (Aab-e-Hayat)
http://www.youtube.com/watch?v=e_YmtrrgYKIKabootar Aaja Aaja Re (Mangla)
http://www.youtube.com/watch?v=tPJ8iZWr2WwJhanan jhanan jhanawa more bichhua jhanan baje re - Mangla
http://www.youtube.com/watch?v=hGvvU1j1pssO arabpati ki chhori (Makhkheechoos)
http://www.youtube.com/watch?v=fIbSEdWTrlYSakhi ri Chitchor nahin aaye (Jogan)
http://www.youtube.com/watch?v=EgiNP9DW-dkAkhian Bhool Gaee Hein Sona... (Goonj Uthi Shehnai)
http://www.youtube.com/watch?v=_YmflauAxYEGhunghat Ke Pat khol(Jogan)
http://www.youtube.com/watch?v=xXbqNlXy5QkSun Sun Madras Ki Chhorie (Mujrim)
http://www.youtube.com/watch?v=zlhF3_X9VIgJogi mat ja mat ja (Jogan)
http://www.youtube.com/watch?v=dyoqpQ8n_fgAa ja Chhaye Kare Badra (Lajwanti)
http://www.youtube.com/watch?v=OIvUchW9bJgMein Toh Giridher Ke (Jogan)
http://www.youtube.com/watch?v=GRreS_7Sh9EA tribute to Geeta ji and Guru Dutt ji
http://www.youtube.com/watch?v=V_ZiriM0BQ8Sambhalo dil zara - Dil Bhi Tera Hum Bhi Tere (It says Asha ji, but this is sung by Geeta ji)
http://www.youtube.com/watch?v=sji1P3_nlT8Mujhe Huzoor Tumse Pyar Hai - Son Of India
http://www.youtube.com/watch?v=btQCQBw2kWkDekho Dekho ji - Dilruba
http://www.youtube.com/watch?v=pbTfY_8q8fcTum Dil Mein Chale Aate ho - Dilruba
http://www.youtube.com/watch?v=cGK--fIDc1gHumne Khai hai - Dilruba
http://www.youtube.com/watch?v=YtWLixxE5SEMujhko Tumjo Mile - Detective (duet with Hemant)
http://www.youtube.com/watch?v=AMyTix1MRw0Tumse hi meri zindgi meri bahaar tum - with Mukesh - 'Apna Ghar'
http://www.youtube.com/watch?v=3b7Nxqb6zdkAre na na na na na na tauba tauba - Aar Paar - with Mohd Rafi
http://www.youtube.com/watch?v=eZ-bBarQ8PAThandi thandi hawa pooche unka pata - with Asha bhonsle - 'Johnywalker'
http://www.youtube.com/watch?v=KkRuqSlxaAMIs duniya se nirala hoon mein - with Asha bhonsle - 'Ragini'
http://www.youtube.com/watch?v=dyxzcdbnrpUDekh idhar yeh haseena - with Mohd Rafi - 12'o clock
http://www.youtube.com/watch?v=u8jphyOC8S4Are taubaa yeh teri adaa - Geeta dutt - 12'o clock
http://www.youtube.com/watch?v=dL9U9OFhYs0Acchaji maaf kardo thoda insaaf kardo - with Mohd rafi - 'Musafirkhana'
http://www.youtube.com/watch?v=eOCIhWxUdvoO bedardi kyon tadpaye - with Mahendra kapoor - 'Godaan
http://www.youtube.com/watch?v=ALd05GEne-4Aa aa mere taal pe - Kal hamara hai .. not very clear
http://www.youtube.com/watch?v=OyVLDQAPDd4Nazar ka jhuk jaana - 'Paasport'
http://www.youtube.com/watch?v=LRVxIng5r0UTauba tauba tauba - Paasport
http://www.youtube.com/watch?v=qBV0AtUQE1MHo jab se mili tose akhiyan - with hemant Kumar - 'Amanat'
http://www.youtube.com/watch?v=a7W0x8UFcF4Araman bhare dil ki lagan - Geeta Dutt , Talat Mahmood - Jaan Pahechaan (1950)
http://www.youtube.com/watch?v=fQyncFAde5QPiya aiso jiya mein samay gayo re - Geeta Dutt - Sahib Bibi Aur Ghulam (1962)
http://www.youtube.com/watch?v=netfsvngLRITum jo hue mere hamsafar - Mohd Rafi , Geeta Dutt - 12 OClock (1958)
http://www.youtube.com/watch?v=eXj8YQaxYEIAaj ki raat piya - Geeta Dutt - Baazi (1951)
http://www.youtube.com/watch?v=i4F6SiCNxNYMujhe jaa na kaho meri jaan - Geeta Dutt - Anubhav (1971)
http://www.youtube.com/watch?v=Ev6PrRWXBhYHam hain tere deewaane - Geeta dutt, Talat Mahmood - Shabistan (1951)
http://www.youtube.com/watch?v=hGlIlq-v0XcJab baadal lehraaya - Geeta Dutt - Chhoomantar (1956)
http://youtube.com/watch?v=BdUWggJdCSUAa jaan-e-wafa aa - Anarakali (MD : Basant Prakash)
http://www.youtube.com/watch?v=TzpEll0YUNkSuno suno banawari - Jeet
http://www.youtube.com/watch?v=LCjyg22C-Z0Aajaa kar le muqabala (with Rafi sahab) - Detective
http://www.youtube.com/watch?v=15uPm9zjBKAOonchi edi walon ne (with Rafi sahab) - Bedard Zamnaa Kya Jaane
http://www.youtube.com/watch?v=4R1R3LzmjRkBachpan ke din (with Asha ji) - Sujata
http://www.youtube.com/watch?v=LBwyeSSYS5AMuhabbat kar lo (with Rafi sahab and Suman ji) - Aarpaar
http://www.youtube.com/watch?v=bLC0JLovNkITu mera chaand main teri chandani (with Shyam) - Dillagi
http://www.youtube.com/watch?v=_jiT0p3dV7gJai jagadish hare (with Hemant da) - Anand Math
http://www.youtube.com/watch?v=zm7hp9K-ingBhagawan do ghadi - Bahar
http://www.youtube.com/watch?v=pv3EeF8hfUcAeri main toh prem deewani - Jogan
http://www.youtube.com/watch?v=bVJKwxK2dwkMera naam chin chin choo - Howrah Bridge
http://www.youtube.com/watch?v=Z8cB6-6yQNQJara tham jaa tu aye sawan - Jogan
http://www.youtube.com/watch?v=tFj2L3UR2TgMara re mara woh maaraa - Ab-e-hayat
http://www.youtube.com/watch?v=99srOMlhIo4Dupatta mera malmal ka (with Asha ji) - Adaalat
http://www.youtube.com/watch?v=ogCdKCQLa5IDaaro re rang daaro re - Jogan
http://www.youtube.com/watch?v=7eBXtxeFLss&NR=1Chanda khele aankh michouli - Jogan
http://www.youtube.com/watch?v=FUd8LQE6otAGend kheloon kanhaa ke sang - Jogan
http://www.youtube.com/watch?v=a0lZNmUjXR8Dagmag dagmag dole naiyya - Jogan
http://www.youtube.com/watch?v=sFMqCFNbHQYBaat chalat nayi chunari - Ladki
http://www.youtube.com/watch?v=D1s98aM94WMJaanu jaanu ri (with Asha ji) - Insaan jaag utha
http://www.youtube.com/watch?v=ZaSLQd3ACs0Na jaao saiyyan - Sahib bibi aur ghulam
http://www.youtube.com/watch?v=tWdlG1eYGEITadbeer se bighadi - Baazi
http://www.youtube.com/watch?v=Bxdy31ZWwGgJa ja ja bewafaa - Aarpaar
http://www.youtube.com/watch?v=4x4Ii1WBTcgMeri aan bhagawan - Toofan aur diya
http://www.youtube.com/watch?v=M7M2AUx62kQNachati jhumati muskurati aa gayi pyar ki raat (with Kishore da) - Miss Mala
http://www.youtube.com/watch?v=O5ElDU6zndgMera dil tadpakar kahan chala - Shabnam
http://www.youtube.com/watch?v=GIehUgILpFMKismat mein bichhadana thaa (with Mukesh ji) - Shabnam
http://www.youtube.com/watch?v=3ECSM9WToH0Jhuki jhuki pyaar ki nazar (with Asha ji) - Johny Walker
http://www.youtube.com/watch?v=Wz12u4PbpSAHum panchhi mastane (with Lata ji) - Dekh kabeera roya
http://www.youtube.com/watch?v=C_qIzrHQXDEKyon balam humse rooth gaye - Dil ki rani (1947)
http://www.youtube.com/watch?v=alFMpw-ufK4Har zaban ruki ruki - Baaz
http://www.youtube.com/watch?v=n7WXNDnOiUcTaare chandani afsaane - Baaz
http://www.youtube.com/watch?v=7Q1q1v8L5CsNeele asmaani - Mr and Mrs 55
http://www.youtube.com/watch?v=M9Qd4tf3F8URaat nashili - Chhoo Mantar
http://www.youtube.com/watch?v=v5mZ8tWPGRsPhal ki bahar hain - Toofan aur diya
http://www.youtube.com/watch?v=fT1swOUhtBAZor lagake haiyya - Geeta Dutt - Jaal (1952)
http://www.youtube.com/watch?v=LQZ3NTl12lYHumse bhi kar lo - Geeta Dutt - Milap
http://youtube.com/watch?v=RMNQlAwl2pQChahe bhi joh dil - Geeta Dutt - Milap
http://youtube.com/watch?v=clrsZ8qTEwkDekho na dekho hamein - Geeta Dutt, Kishore Kumar - Miss Mala (1954)
http://www.youtube.com/watch?v=E6dI-ohm9NIDo dil jab chupke chupke - Geeta Dutt, Kishore Kumar - Miss Mala (1954)
http://www.youtube.com/watch?v=o04N8728ksEMaane Na Maane Na - Geeta Dutt - Savera
http://www.youtube.com/watch?v=Z0iD76YmvvcNote : Chunariya uri jaaye re - Dilruba
http://www.youtube.com/watch?v=j-GPbN-b5-E This is not sung by Geeta ji even though it says so on youtube