Audio Enhancement

Good evening, We have two (2) audio recordings of interviews (mp3), total duration 90 minutes and we would like the assistance of an audio specialist to improve the quality of the recordings. Make the spoken words clearer, louder, remove any background noise etc. The recording quality is fairly good, but improvement is required. It is essential that this work be done fast and to a high standard. Ideally we would like the work complete within 48hrs of providing the files (via SendSpace, Dropbox etc) – although the quality is more important than the timescales. If bidding on this project, please include details of your experience and perhaps links to samples of enhanced audio files you have worked on. Regards, Sam