problem with the control of audio files

I have a problem with the control of audio files. I am using Scrivener for transcribing recordings. I need to jump from a point to another of the recording but when I try to move the cursor forward and back on the timeline it remains fixed and it does not answer to my commands. Moreover, the bottom forward and rewind do not properly work , they just move the cursor of some seconds.
Does anyone know any trick in order to overcome this extremely annoying problem?
Thank you