Charles802 From United States of America, joined Jul 1999, 380 posts, RR: 0
Reply 3, posted (15 years 7 months 1 week 6 days 4 hours ago) and read 657 times:
It really varies. Some airlines have it only on aircraft that show movies, while others, namely United, have it on all. But, with the trend of portable CD players increasing, I doubt any airlines will be adding music systems if they aren't already there.