Repetead Songs

I have a Clip+ with an external memory, and i want to know if i got repeated songs, someone can tell how can i do this?

Thanks for your answers. 

Turn REPEAT ON if you want them to repeat and REPEAT OFF if you don’t?

I think I expressed myself badly… I’m talking about to have the same song two or more times, i want to check if i got a repeated song in the Sansa and i want to leave only one file of that song.

Only effective way Ive found is to go to the songs list find the duplicates and then delete them from there. Its not efficient or fun but it works.