Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Surprised sound quality.

Pleasantly surprised with the sound quality in such a small and light device. Earbuds just so so. (Use my own superior earbuds, so it's okay.) The FM tuner reception is not that good, that's why the four stars. Bought this manufacturer-refurbished for about $50. Spend an additional $27 for an SD 512 mb flash memory(512 mb works in the external memory slot!). The software works well with my Windows XP/Windows Media 10. For less than $80 I get 640 mb of total memory, more than enough for what I need.