Error playing file - Ogg Vorbis Mode 2 (6750)

I keep getting errors playing back files that were encrypted with Vorbis.

MediaInfo report: General Complete name : C:\RT120307-0938.wav Format : Wave File size : 49.6 MiB Duration : 1h 48mn Overall bit rate : 64.0 Kbps

Audio Format : Vorbis Format settings, Floor : 1 Codec ID : 6750 Codec ID/Info : Mode 2 Duration : 1h 48mn Bit rate : 64.0 Kbps Channel(s) : 1 channel Sampling rate : 48.0 KHz Resolution : 16 bits Stream size : 49.5 MiB (100%) Writing library : libVorbis 1.0 RC3 (UTC 2001-12-31)