M901 4GB 4.3" H.264 Touch Screen MP5 Player with TV-Out, eBooks Read aloud, Full HD 1080P and 8GB TF

• 4.3" touch screen with 480x272 high resolution.
• Built-in 4GB memory, Supports TF card up to 16GB.
• Supports H.264 and full HD 1080P video playing.
• Supports TV out and USB port, eBooks Read aloud, and voice recorder.
• Supports FM radio, alarm clock, Games, Dictionary.

I must say I don't really like this product. I am having troubles already with downloading music onto the sd card and having them play onto the product. It keeps telling that they are not appropriate files? I have tried formatting it and it doesn't work. I may have to return it?