FLOW Live Tour 2006-2007 at Nippon Budokan

I'm so Happy!!! ^_^

I finally got this concert!!! This is my Favorite concert!
thanks again to jpvx ^^

now my problem is...... i may not be able to save/burn it to DVD, because the size of this file is 7.15GB. Does anyone know how to decrease an ISO file's memory size? If you have any idea, please let me know. Just comment below and i'll be glad to try it.

Thank you :D