I ordered a MP3 player from Zetronix Corp in Massachusetts in August of this year. The player worked fine but when I was traveling the SD card slot on the player stopped working. I informed the company and I was told to return it for a replacement. I sent the player back and after an extended period I received the replacement. The replacement player did not function with the SD card either and I informed the company again. I was told that if I bought one of their cards it would work and if it didn't I could return everything for a refund... read full review »