Debbie from Pocket Review spend some time with SanDisk's Sansa e140 digital audio player. Here's a short snip from their review:

On the plus side, the e140 version of the player comes with 1GB of storage and a card slot for SD cards. If you already own a bunch of SD cards, then you have an MP3 player with a storage level only limited by the number of cards you own and their capacity, for less than £100.00. This is handy if you want to listen to ebooks on your Sansa, use it to carry files other than audio, as well as just being your MP3 player..



Link: Pocket Lint