Music Video-Sound Playback Rates
 

Searched but couldn't find much about this. What is the general rate for someone doing sound playback on a music video? I just did a music video last week for a friend(no pay) and the day before I actually arranged the whole song into pieces for playback so we wouldn't have to wait on ff/rewinding or whatever. My question is what is the general rate if I provide all equipment and prepare the song? I have a rate in mind but I want to know how much one generally makes. Just curious.

Thanks
Nicole