[HybridAndy]

I haven't used mine for music, but I've downloaded a few podcasts via Opera and listened them both with headphone and via the onboard speaker.

Both worked well, although I had to put the device upside down in the small extra pocket on my jeans to get the headphone cord to reach my ears comforablely while I mowed the grass. The speaker works great if it's sitting on a desk infront of me and works well if cranked ot the max in the car (depending on the recording, can be hard to hear). I just use the Music player buit into the TouchFlo slider.

I've listed to 2 hours solid with speaker set to max and still made it to the end of the day without recharging. I don't do a lot of active/talk time on the device either though, but I didn't really notice any major power drain from using it this way.