I'm using Windows Media Player 11. I can play .m4a files but I can't add them to the library. I've tried dragging them from a folder into the library. I've also tried going through the normal search within WMP. It searches for files but never finds any to add.
Does anyone know of anything that would prevent the files from being recognized during the search?...or is WMP 11 supported with the WMP TSE?
I'm having the same problem with FLAC files. I can play the files, but they can't be added to the library.
I'm using WMP 11 too, on Vista x64