Hi Dear Madam/Sir,
I can transcribe your audio in a minimum of two hours and a maximum of four hours after I receive it. So you´d be able to have the transcription today in a maximum time of four hours but very probably, earlier.
I can send you the file in a .srt format if you´d like to attach it to a video as a subtitle. I dont attach the subtitle, I just create a file that can be attached as a subtitle through a separate process. Alhough, if you name the .srt file with the same name of the file, you´d be able to display the subtitle in Windows Media Player or Windows Media Player Classic while playing a video file. (Not sure if it works for audio files)
If that´s not what you´re looking for, I can create any other file format like Microsoft Word with the transcription.
We can set any update timing through any means that is comfortable for you so that you´re aware of advance.
If you take a look at my profile you´ll see that I have a great wealth of experience subtitling thus, transcribing audio or video files.
We could share the file via GoogleDrive or DropBox in case you don´t have a preferred share client.
Best wishes on your choice for a freelancer and for the completion of your offer!