Weird Files on Phone

[KuRensan]

When I use my mobile phone as mp3 player I play all my songs in shuffle but every song (or most of them) have a extra files called _.songname.mp3 also on my sd card when I try to install a wad but when I play those files via shuffle my phone rumbles and says Unknown file blablabla it is really annoying -_- How to fix it

 

[Gnargle]

You're on a mac, calling it now.
If you are, it's because the Mac is reading a Windows formatted disk. Any file moved onto the disk will have a 4kb file named _.name.extension.
Just delete them, it's fine.