How can I hear Music with A Headphone

[Timo Jyrinki]

Yep. One needs to notice that there is no standard for 2.5mm plugs
like there is for 3.5mm. That is, eg. Nokia's 2.5mm -> 3.5mm adapters
do not work with Neo. Motorola's do.

I bought a few from the terrible looking pc-mobile.net, under "Audio
adapters", code "MP35A" (3.5mm Stereo Audio Adapter for Motorola
MPx200/E398) - they work great.

-Timo