~~ ja nai. = It is not ~~. ~~ ja nai ka. = Isn't it ~~? ii = 'OK', or 'good' So, ii ja nai ka = 'Isn't it OK?' or 'Isn't it good?' (= 'looks good' or 'sounds good') and, 'nee' is very rough way of saying 'nai'. So, 'ii ja nee ka' is more rough than 'ii ja nai ka'.

ii jya ne(long vowel sound) ka 　is manly way to say " ii dewa nai desuka" or "ii jya nai desuka", which means " Isn't it ok?". But I have to say it depends context : )

Hi Lucy, just copy/paste into ... www.xpresstranslations.com/japanese-english_free-translation-online.html -