Hi idiego,

I'm very familiar with the programs from Brainwave-Sync; I have a few myself, and I would say yes, I do believe that you can use both. While doing the BrainEv program, I also listen to other entrainment audio from different companies, mainly mp3s from the Ennora website, which are intense brainwave entrainment programs, more so than Brainwave-Sync, and I have no problems striking a balance between those programs and BrainEv.

I would say it just depends on how you feel.

Robert

Lavender has the point here - if you are using multiple programs, how will you know if they are working or if not, which one is the problem?

You also run the risk of over-entraining.  Compare building your mental muscle to building physical muscle at the gym. Imagine you try to do "everything" in one day, and spend 15 hours non-stop on arm weights - you'll likely end up exhausted, and without any significant results to show for it. But spend 30 minutes a day for the whole month, and you'll probably see substantial results. Little and often WORKS.
 
In addition, our research shows that listening too much can desensitize you to brainwave entrainment stimuli - in the same way that people living near noisy environments (such as next to train tracks or airports) adjust to no longer "hearing" the constant bombardment of loud noises. 

Over-entrainment can cause sleepiness during entrainment sessions or problems reaching your full potential during sessions.  It is best to use products separately to allow the brain time to work and the entrainment to do the best job.

-Tiffany

thanks very much for the answers 
But i'm not using a brainwave program, simply an mp3 for the planeal gland.