Help? svp! So, my Philips 4GB mp3 player is wierding out on me. I have always put the same kind of files onto it, and it worked. I could put a couple hundred songs onto it and a movie. And it played them without problem. I used the windows media player 10 once to sync the music files on there. It worked fine until I wanted to add more songs, and then my player stopped playing the music. I went and cleared out EVERYTHING. Every music and video file was removed, so I could start clean. I put the files on there the normal way, from my computer, copy and pasting. It now says "File format not supported!" when I try to play a song. It will play the movie, but not the music. I tried the reset button, the repair thing (which nothing happened), and it says that my device is totally updated. I dont understand....perhaps you do???

"File Format Not Supported" - SA6045/37 The file format not supported message means that the type of file you are trying to load into the GoGear is not compatible with the GoGear. There are no GoGear's that are compatible with iTunes. As far as WMA files are concerned, the GoGear's vary wildly. If the WMA file has a bit rate higher than 192 kbps (which is quite common nowadays), it will not work. If you actually have an SA6045, then make sure the license on the WMA file has "transfer rights," or that the license has not expired. You can check this by right-clicking on the song, selecting Properties, and looking at the tab that says "license" or "digital rights management." 
If you find that you are using an incompatible format, convert the songs to mp3 format. If the songs came from CD, use Windows Media Player to re-rip the songs in Mp3 format. You can do this in Windows Media Player 11 by  higlighting the "Rip" tab, pulling down the drop down-menu by clicking on the little tiny arrow that appears underneth the word "rip," and selecting "format", and then "mp3".
Good luck!
-Tha Mp3 Doctor