वं सं झ्रं झं युं जुं ठं ह्रीं श्रीं ॐ भगवति चित्रविद्ये महामाये अमृतेश्वरि एह्येहि वरदे वरदे प्रसन्नवदने अमृतं प्लावय प्लावय अनलं शीतलं कुरु कुरु सर्वविषं नाशय नाशय सर्वतापज्वरं हन हन सर्वपैत्योन्मादं मोचय मोचय आज्योष्णं शमय शमय सर्वजनं मोहय मोहय मां पालय पालय श्रीं ह्रीं ठं जुं झं झ्रं सं वं स्वाहा । vam sam jhram jham yum jum t'ham hreem shreem om bhagavati chitravidye mahaamaaye amri'teshvari ehyehi varade varade prasannavadane amri'tam plaavaya plaavaya analam sheetalam kuru kuru sarvavisham naashaya naashaya sarvataapajvaram hana hana sarvapaityonmaadam mochaya mochaya aajyoshnam shamaya shamaya sarvajanam mohaya mohaya maam paalaya paalaya shreem hreem t'ham jum jham jhram sam vam svaahaa .
No. Initiation is required only if you want to do mantra sadhana, not for listening. You just have to listen to the mantras we provide to get benefited.