I would say that you should be using the MTU installed ASPI driver, unless you are having problems with it. You can download our latest driver from:
http://forum.mtu.com/showthread.php?threadid=493
If this still doesn't work then try this thread and find the post on the Second page by MTUSUPPORT:
http://forum.mtu.com/showthread.php?...5&pagenumber=2
The read speed of CD+G is longer than Audio, and yes with the Plextor brands of drives takes 8 minutes to read in. This is due to the decoding of the graphics within the drive itself. So the speed of your system will make no difference on this. If you switch over to Audio, you will see that it shoudl read the full disc in about 2-3 minutes instead of 8.