I have a mac so i can only do the mp3's, however HoG is like 200$ for the computer whereas its like 16 in a pack for mp3s, can someone tell me the big difference?

I popped in marijuana today. Lied down, and i started feeling twitchy, after a while, i would randomly see all white, and then back to complete darkness. Soon, it felt like i was falling, or being taken somewhere, then finally it really took me, i felt thrust around, it was the coolest thing ive eve...