How many words are there, roughly, in the file? Around 10,000 or? (Normal conversation rate is 150 words per minute.)
I'm happy to translate for $1/100 words, or slightly less if the employer is squeezed for money. But 10,000 words is a lot for 3 days! My relaxed rate is 2,000 words per day, which can be pushed to 3,000 if necessary. But this job also involves transcribing from the audio... Even that takes a number of hours!
I'll be happy to do the work for you, and I'll give you the highest available quality! But I know my limits. If it's 10,000 words, I'll need almost 5 days. Let's discuss by chat, though!