ok so my shuffle wont turn on anymore. works fine when connected to the mac and all. I use it for running and it is refurbished purchased Christmas time. If i bring it to genius bar, what would they do? give me another one? what happened to it? it just stopped working one run...thought it was the battery...but after charging it...nothing happened....it could be water...but I wouldnt know from just looking at it, and to be all honest..the most "water" it came in touch with was sweat from my head... what should i expect?