This mixed study investigates the attitudes teachers in English institutes have about computer pronunciation software in teaching English pronunciation. Pronunciation Power 2 was used for this purpose. First, a survey was used as the quantitative method. 55 teachers from 5 English institutes took part in this research and these institutes were randomly selected out of 10 institutes in Guilan, Iran. A questionnaire consisting of 21 items was used as the instrument of quantitative method. To analyze quantitative data, descriptive statistics methods like frequency, percentage, and mean were used. The findings of quantitative method indicated that teachers' attitudes towards Pronunciation Power 2 are highly positive and they realized it as a useful means of teaching pronunciation. The findings also revealed that teachers should be trained in this software so that they use it appropriately and effectively. Second, an interview was used as the qualitative method. Five teachers were selected voluntarily from five institutes. Semi-structured interview questions were used as the instrument of qualitative method. The qualitative data analysis was done through examining, and organizing data, coding, and identifying themes.