How is the sound quality with earphone's on n800?
www.myspace.com/davi_tv

It sucks with the included Nokia headphones, unless you live in a quiet world absent of all noise pollution. It's worth getting a better quality pair of phones, especially if, like me, you want to listen to and understand audiobooks, podcasts, or any other form of the spoken word.

Of course there is no noise in sound as in the Palm TX ... and some other Palm

It's definitely better than Palm Z72, but there is some noise if you're listening to music that has very quiet parts (classical).