iRiver iFP-895 MP3 Player "put window back track 2000" Questions

...put songs on my daughters new mp3, the files are transaferring, but display no authorisation on the mps when i try to play them back, they are stored on wmp files The songs are copyright encrypted - ...

...back, and play or stop (may be "hold"?) I notice that the material I wanted to put on the player is in there, because I can play it from there through Microsoft media player on the computer. I am not ...