Hi DEVA!
I listen some binaural music or so called brainwave sounds. Somehow it helps for relaxation and de-stress myself.
There are plenty of sources when you google or yahoo, if interested in making your own for some certain purposes (meditation, astral travelling, IQ enhancement, etc) I can suggest these softwares;
Cybershaman (free) (lots of lots of stuff, more than you can imagine, try it!)
Athmosphere Lite by VectorMedia Software (light version free, good for plain ALPHA, BETA, DELTA, THETA waves with some nature sounds)
Brainwave Generator (free trial, great software, its forum has plenty great stuff)
Cool Edit Pro (aka for Adobe Audition) (You can engrave beats into your favorite music, sounds bit pro style)
www.transparentcorp.com has also special program called NEURO PROGRAMMER for $44.95, free trail offered before buy.
Good luck with your journey and enjoy!
Blessings...
T_T