You may need to download ES File Explorer File Manager - Android Apps on Google Play
and then navigate to the music and move it to the Music folder. You might also be able to do this by plugging in the Turbo to a PC and using the File Explorer in Windows.
If any of the files are .wma they won't play on the Turbo natively. You'll either need to use a different music app like Poweramp Music Player (Trial) - Android Apps on Google Play or try a different work-around, as discussed here: