Rainbow CD

[blackmage]

I was looking around on yesasia at Ayu's CDs, just making a list of the CDs I don't have and I don't have Rainbow *tear falls from right eye* I have a question... There is a Japan version that is a DVD audio and just a normal Japan version and then the overseas version. Well I noticed that looking at the info, the DVD audio has 16 tracks while the rest don't but it is completely too expensive so I was wondering, what is the difference between the regular Japan version and the Japan DVD audio version? Any help would be appreciated.