At first, I recommend forgetting about the clave when listening to the soundtrack. Focus on the 'tu-ku (small pause) PA!' (conga) sound first. The 'tu-ku' sound happens on the 8-AND and 4-AND counts. That 'PA' sound are your 2's and 6's when dancing on2.
I have loaded the waveform of the track and added some cue markers for you to understand what is happening in the beat. You can do the same with any audio editing program, for example, the free Audacity. Please remember that this is not a perfect graph of the waveform, but it is very accurate if you focus your attention on the peak points. (No noise reduction or normalizing was done).
Theexercisevideo (recommended) is posted here : Salsa Beat and Rhythm Exercise.