I have 100 tunes on my pen drive but the medianav unit only recognises 33 of them. I have tried them as MP3, WMA and a combination of the two formats. Renault tried my drive in three other Capturs with the same result. My sons Peugeot recognises all of them and his pen drive which works fine on his car only shows about 60 out of 300 pn my car. Anyone have a solution as my Renault dealer seems to have no idea