Onair2 - player translation

Hi can anyone tell me where in the theme files i can change the text in the player. I want to translate in Bulgarian the text that is in the player itself. This is impossible with the traditional way of creating files of the type with translation of the type po.or mo.
I have already created a translation for this them in Bulgarian as I have translated all the plugins but some things remain unchanged and obviously need to be searched in a specific file