於是在官網的 F.A.Q. 上看到
Q: RMVB files play without sound
A: You are probably missing a decoder for RealAudio COOK. You can install that by following these steps:
- Download the Windows version of binary codec pack for MPlayer.
http://www.mplayerhq.hu/design7/dload.html#binary_codec
(filename = windows-essential-20071007.zip) - Extract only these files from the ZIP archive:
cook.dll, pncrt.dll, sipr3260.dll, drv33260.dll, drv43260.dll - Put those files in the Windows system folder.
That is C:\Windows\System32\ on a 32-bit version of Windows.
That is C:\Windows\SysWOW64\ on a 64-bit version of Windows.
照著做就搞定了!