No more knowledge on my part yet, but here is the output from MC13 "Copy graph info to clipboard".
Filter Graph Info:
Filter 'Default DirectSound Device'
CLSID: {79376820-07D0-11CF-A24D-0020AFD79767}
Host: C:\WINDOWS\system32\quartz.dll
Input Pin 'Audio Input pin (rendered)'
Connected to pin 'Output' of filter 'DC-Bass Source'
Major type MEDIATYPE_Audio Sub type MEDIASUBTYPE_PCM, Format type FORMAT_WaveFormatEx
Filter 'DC-Bass Source'
CLSID: {ABE7B1D9-4B3E-4ACD-A0D1-92611D3A4492}
Host: C:\Program Files\DSP-worx\DC-Bass Source\DCBassSource.ax
Output Pin 'Output'
Connected to pin 'Audio Input pin (rendered)' of filter 'Default DirectSound Device'
Major type MEDIATYPE_Audio Sub type MEDIASUBTYPE_PCM, Format type FORMAT_WaveFormatEx
I suspect that before it was playing back through QuickTime as it was set to 'automatic' under Options -> File Type, and now that I've switched it to 'JR vid-eng w/DS' it just shows a blank screen and plays the audio from the file.
Glancing through the above MC output, is the DC-Bass filter just for MP4 audio? Just to make certain it's clear, I'm trying to playback MP4 video files.
Thanks,
JB