Installed Vegas movie studio 16 on windows 10 -- can't make any movies anymore.
Support replied with: Starting with recent versions of Windows 10, the VEGAS line of products uses native Windows tools for stereo AC-3 encoding and decoding. It is not possible to encode 5.1 AC-3 files since they are not supported through the operating system. To encode 5.1 audio, use another audio codec such as WAV
SO - what do I do now?