It is only the RED version linked that is on sale from Amazon; the blue one is from a 3rd party and thus not eligible for prime or the mp3s.
According to the page I ordered from and this link this purchase qualifies for a $10 coupon Amazon will mail in a few weeks good for use in the Amazon mp3 store.
Product Features
* 1.5" color display for music and playback
* Built-in FM tuner with FM recording and voice recorder
* DRM 9 compatible with USB 2.0 interface
* Plays video files and includes JPEG picture browsing function
Technical Details
* Brand Name: Nextar
* Model: MA715-20R
* Digital Storage Capacity: 2 GB
* Hardware Platform: PC
* Height: 3 inches
* Width: 1.6 inches
* Weight: 1.4 Ounces
Some reviews I found in another thread from a few months ago when these were $20 from Staples reviews on overstock.com

