im getting a ipod nano next week so i watched the video from apple and it showed being able to click on all the songs in my library and drag them to my playlist. the problem im having is when i click on a second song it removes my highlight from the first song. in other words i have to drag one song at a time instead of being to highlight a bunch of songs and drag them all at the same time. what am i missing or doing wrong. i have a power mac g4 digital audio with 10.4.9