Some people don't like Roxio (any), some people don't like Nero (any), some people don't like Nero 6.
Roxio products tend to be very bad neighbours to any other CD/DVD software, and since many here mix and match the best tools for the task, they don't much like ROXIO.
Not used EMC7 myself, but if it's like most Roxio products, the menus should take you pretty well where you need to go, and if it works, fine, but if it screws up (like the audio being out of sync), then there's nothing you can tweak to fix it!
Sorry I can't be any more help, but with Roxio, it really should be a case of "Lets make a DVD".