MP3 players

Perfect gift idea for people who love music!

So many different features available on a whole range of MP3 players - which is most important?

Audible Support
Bluetooth
Built in Speakers
DAB Radio
FM Recorder
Linux OS Support
MPEG-4 Video Playback
OGG Bitrate Playback
Photo Viewer
Sleep Mode
USB On The Go Support
WMA DRM (Security) Support
Has an FM Radio
Doesn't require any drivers when connected to a PC
Has a battery recharge function
Has direct encoding abilities (create MP3/WMA files without the need of a PC)
Has a voice recording function
Supports the use of an external microphone
Has folder navigation support
Has playlist support
Has mid track resume
Is made from Metal
Has upgradeable firmware
Waterproof