For those who want to add the in program music generation plug-n, the Quicktracks for Premier {Pro & Elements] is now available for free [was $99?]. Search the Smartsound website for Quicktracks & Premier and there is a page describing the offering. Makes your V4 seem a little like V7.
A little clunky as to how it interfaces, but when you figure it out, it's a little easier to add that background to fill the dead air on some scenes. A few sample tracks are included that wil get you going. The rest, you probably will have to buy.