Presently 50 LANGUAGES provides:
57
languages,
most of them with sound files .

We plan to have 150 languages in total,
which is the number of languages with
more than 3 million speakers

(according to Wikipedia and Ethnologue):

Acehnese Danish Jamaican Creole Marwari Somali
Afrikaans Deccan Japanese Min Bei Sotho–Tswana
Akan Dholuo Javanese Min Dong Southern Quechua
Albanian Dogri Kamba Min Nan Southern Thai
Amharic Dutch Kanauji Minangkabau Spanish
Arabic Efik Kannada Mongolian Sundanese
Armenian English Kanuri Neapolitan Swedish
Assamese Ewe Kashmiri Nepali Sylheti
Awadhi Finnish Kazakh Northern Berber Tagalog
Azerbaijani French Khmer Norwegian Tamil
Bagheli Fula Kimbundu Oriya Telugu
Balinese Galician Kituba Oromo Thai
Balochi Gan Kongo Pashto Tigrinya
Bambara Ganda Konkani Persian Tshiluba
Batak Georgian Korean Piemonteis Tsonga
Bavarian German Kurdish Polish Turkish
Belarusian Gikuyu Kyrgyz Portuguese Turkmen
Bemba Greek Lithuanian Punjabi Ukrainian
Bengali Guarani Lombard Rajasthani Umbundu
Bhili Gujarati Luyia Rangpuri Uyghur
Bhojpuri Haitian Madurese Romanian Uzbek
Bikol Hakka Magahi Russian Venetian
Buginese Haryanvi Maithili Rwanda-Rundi Vietnamese
Bulgarian Hausa Makuwa Santali Wolof
Burmese Hebrew Malagasy Serbo-Croatian Wu
Catalan Hiligaynon Malay Shan Xhosa
Cebuano Hindi-Urdu Malayalam Shona Xiang
Chewa Hungarian Mandarin Sicilian Yoruba
Chhattisgarhi Igbo Mandingo Sindhi Yue
Chittagonian Ilokano Marathi Sinhalese Zulu
Czech Italian   Slovak