I've searched around for anyone else having this issue but I haven't seen it. When I'm playing songs through the speaker in the phone, some songs will make the stock S4 music player app skip to the next track. If it only happened every once in a while it wouldn't be a big deal but it has happened nearly every time I play music (which admittedly has only been a handful of times). I turned off the voice control feature and it solved the issue on the songs causing this- but I kinda like the voice control while I'm driving. I've got other music player apps but so far I like the stock app better. I guess I could report this as a bug but I have a feeling that it's just a problem inherent with the feature. Has anyone else experienced this? *edit* As a side note this hasn't happened while I have the phone connected to an FM transmitter in the car.