When CD's are played using the single slot, is there a way for track names to appear? I used to have a 9-3 and it would display the track name if it was recorded with the song. The same CD's just show up as TRACK 1, TRACK 2, etc. Also, the 9-3 and 9-5 show the names of the songs. Is it possible with the Nav system in the 9-7. Also, who makes the 9-7 nav system vs. that used in the 9-3 and 9-5.