Help Trouble adding more music to player on phone

[jazzyjohn]

I have several songs on my phone already, but in the last several days I've tried to add more. They show up on the list, but the song length on the right is missing, and when I try to play any like that, it skips to the next song that works. I've still got lots of microSD space so capacity that way couldn't be an issue. Any ideas?