Spanish to Spanish translation

I need someone to transcribe twelve Spanish interviews recorded and saved as .WAV [login to view URL] transcriptions are to be done in Spanish. The interviews range from 30 minutes to 90 minutes, although most are around 50 minutes. I need them transcribed into Word, with correct punctuation and to be readable. This needs to be a word-for-word transcription. The winning bid will do a 10 minute sample to see if the work is acceptable. I will pay for the whole batch of twelve interviews. Please give some details about yourself, where you live, professional background, experience with transcriptions etc.