Just about every jam track is in 4/4. 4 beats per measure.
The snare drum is almost always on 2 and 4, the bass is almost always on 1.
The "almost" is what makes music interesting :)
So if you consider the first bass drum you hear beat 1, and the first snare drum you hear beat 2, you can count to 4 from there and repeat.
Does that help?
Jon