Hmmm... make sure you have the file extensions visible in your Windows Explorer (Options|View|Hide MS-DOS file extensions... unchecked, like Oscar adviced). Then find the problematic file and verify once more that it really has .mp3 extension. If this is the case, it should start playing with your default player (WinAmp?) with double-clicking it. Ok so far?
If the file is in a shared directory and refresh does not bring it visible on WinMX, unshare that directory and share it again.
If this does not help either go back to Windows Explorer and make a copy of the original file (select it and then copy/paste) and rename the copy a little differently from the original (of course see that it still has the .mp3 extension). Then go back to WinMX and try refreshing. Does the copy show ok in the library?
- tg
