The 4GB iPod Nano is quite a popular mp3 player, and this is the cheapest available at the minute - £135.20 delivered, using the discount code below. It is available in either black or white from John Lewis.
Promo Code: DISC2 (20% off)
Details: Take everything you love about the iPod and shrink it. The pencil thin iPod Nano packs the entire iPod experience into an impossibly small design. View photos, thumb through album cover art, even play games and view calendars on the 1.5 inch colour LCD display. Carry up to 1,000 songs or as many as 25,000 photos in your pocket.
PC and Mac compatible. Completely skip-free playback. 14 hours of continuous play from a 5 hour charge; 3 hour fast charge to 80% capacity. Autosync your entire iTunes library. Create playlists and rate songs. Shuffle songs or albums. Customise menus. Store and view contacts, calendars and to-do lists. It also features a sleep timer and an alarm clock function.