Check your AV receiver/amplifier before ripping copy-protected Blu-ray movies to your Windows 7 media center. According to Blu-ray Disc format specification, a commercial Blu-ray Disc may contain the following video and audio streams: MPEG-2, MPEG-4 AVC and SMPTE VC-1 video formats. LPCM as well as Dolby Digital, Dolby Digital Plus, Dolby Lossless, DTS digital surround [...]