Basically the words in song and in karaoke are not synchronized, that makes it really confusing to sing (not intended i guess). The words in karaoke go 3 seconds after the actual words sung in the song. Other songs (including the additional content ones) work well.
Video: http://youtu.be/ATZq5wDVWZ4
My spec:
Program: UltraStar Deluxe v1.1.0
OS: Windows 7 64bit
RAM: 8 GB
GPU: NVIDIA GeForce GTX 460
CPU: AMD Phenom II X4 840
Video: http://youtu.be/ATZq5wDVWZ4
My spec:
Program: UltraStar Deluxe v1.1.0
OS: Windows 7 64bit
RAM: 8 GB
GPU: NVIDIA GeForce GTX 460
CPU: AMD Phenom II X4 840