I have my Droid when I need an mp3 player. The Xoom speakers are like laptop speakers; it's unreasonable to expect Sydney Opera House sound from them. While I do agree that it's a bit obnoxious to have them pointed at others in public area, both extremes, can be remedied easily enough using bluetooth.
BTB, my old Altec Lancing Sound Blade sounds great, of course, but looks REALLY sharp next to my Xoom in it's dock, along with the Motorola keyboard and my Droid perched in it's cradle.
I got that last year (the Sound Blade) for 60 bucks shipped off eBay. Probably even cheaper, now.
Droid: UD Extreme 7.0 driving a Chevy ULV 125-1000
Xoom: Rooted, Overclocked, SD enabled, Themed,ready for da biznich...