They are all basically the same game with the same code base with different skins and songs put on it.
GSDX Problems
Hardware Renderer Produces Glitches. Use Software Renderer
USB Emulation
No eyetoy emulation
USB Emulation - Might also be Core
Audio Input/output from Qemu plugin seems distorted or lagged or filtered in some way
Core
All singstar except the original and disney versions of the games are supposed to support a disc swapping system that doesn't work.
GSDX Problems
Hardware Renderer Produces Glitches. Use Software Renderer
USB Emulation
No eyetoy emulation
USB Emulation - Might also be Core
Audio Input/output from Qemu plugin seems distorted or lagged or filtered in some way
Core
All singstar except the original and disney versions of the games are supposed to support a disc swapping system that doesn't work.