The play time of the CD you suggest would not last a night. I would instead suggest putting it into a playlist and sleeping near your computer if possible. You could also use a stereo extension cord to extend the headphones reach to a more comfortable sleeping place.
Also, if you just got the tape, I would suggest listening to it normally a few times to get used to it.
May I also suggest reading the "Feel the Power Posts" under "Paraliminal Learning" (if you haven't)? 
Lomas
