After reading all the crappy reviews of this product I though maybe I'd be one of the lucky ones. I was wrong. I got this and transfered about 22 MP3s to it. As I listened to it as I rode my bike I realized that all the MP3s had a "hiccup" in them. Sounds kinda like a skip on a cd. All of the files I had on it came from a cd or right off my computer from being downloaded. All the files had this "skip" sound in them. But all the files, when I listend to them on my computer, where fine. I also tried transfering an entire cd using Windows Media Player. They were transfered by converting them to WMA files. When I played them back on the RI0 800 POS it couldnt even get through most of the songs without gettin all grabled and skiping to the next track. Dont buy this product. Too many people are having issues with it.