My N800 is coming, but the N810 has very good speaker sound, especially when flat and/or near a wall. I was surprised. I don't think the iPodT/iPhone is as loud (unless you puncture the waterproofing plastic).

Generally, the sound quality is as good as the source material (I realized I have a reference CD which I could try).

I have several iPods including a 2nd generation which runs without an external hub for power with the USB host mode adapter (time to port GTKpod or see if iPodlinux might be even more interesting as a media server), and I encode audiobooks from CDs or do podcasts for most of my listenting. My iPod is rarely used any longer since I can do the media player almost as easily. (my only complaint v.s. my iPod video is remembering play position for tracks).

And I have GPS, and a cradlepoint with EVDO setup so I have that too, i.e. a new podcast can be there in the few minutes it takes to download. I checked and even the iPod Touch can't download or move stuff not from iTMS into the music player function, nor do I think the playlists can be editied.

I do and have listened to internet radio. The only occasional problem here is when the only supported codec is a windows speech codec (there are arm versions of the dll, but libwine isn't there for ARM to my knowledge).