Audio Cleanup for Legal Use

I need a .wav audio file cleaned up and amplified for court use. The recording needs to retain original timing and speech order. Recorded time on the file is approximately 3 hours but there is quite a bit of silence that can be removed.

Key requirements:
- Clarify muffled voices
- Reduce background noise
- Maintain original timing and order

Ideal skills and experience:
- Proficiency in audio editing software (e.g., Audacity, Adobe Audition)
- Experience with legal audio requirements
- Attention to detail and accuracy