help asap with sno cross

ok, i downloaded sno cross and dave mira, they are the same format, both have multiple mucis tracks. i use cd2nero to convert,.. ok, my cdi image is 690 mb. when i convert to nrg. it still says the same, but if i hit burn image, it only says its about 50 mins. worth of the cd. my prob is how do i burn with the extracted music tracks, cause it says it has about 800+mbs.
thankx in advance for any help

[Kibuli]

Did you run Unpack.exe and Inject.exe to insert the compressed audio files into the cdi-file first? If you did, what version of cdi2nero are you using? The first version of cdi2nero had some kind of bug in it, so you should use 0.9 beta 2.