I’m operating with Win 11 on a Dell Precisions 3630 Tower using Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz, 3192 Mhz, 6 Core(s), 12 Logical Processor(s) with 32 Gig of RAM. I have been a Vegas user since Version 9. I am now on Version 20 and have produced several projects with this version.

I have an 8 minute video project that use 19 tracks of video and 5 tracks of audio. All audio tracks are mono: 1 narration track, 2 music tracks, 3 SFX tracks. The clip that’s fighting me is one of those sound effects located on the same track adjacent to three other sound effects. All audio are 41,000 Hz at 16 bit. Except for this one clip, all other audio clips are working just fine. The problem clip refuses to playback no matter where I place that clip in the program.

As I’m sure is common, I backup any significant changes by saving a new version of the program, e.g. 1, 1a, 2, 2a, etc. The version I’m trying to finish with version 47h. Version 47g did not exhibit this audio problem and works fine. The difference between the two versions only involves changes to video clips. There are no variations in track lengths or track assignments…or in the overall length of the program. All versions up to 47h have work fine with regard to the audio tracks.

1.       I have clicked on the problem clip, selected Options>Preferences>Audio Devices, and verified that this clip is handled by Microsoft Sound Mapper, as are all of the other audio clips in the program.

2.      I read that one solution was to re-render the track in Audacity. So I took the original .wav clip into Audacity and re-rendered it at 48 kHz at 24 bit. I added this new version into the Vegas Media list, placed in onto the track, and it does not playback.

3.      I have moved the problem clip to other tracks and to other positions within any of the other tracks, and it will not play, even though adjacent sound effects on the same track work just fine.

4.      Since the SFX is loud and sitting under a loud section in one of the music tracks, I thought the automatic compression, noise gate/compression/eq effects might have been accidentally been triggered…they had not.

5.      I tried Muting/Un-Muting, Soloing/Un-Soloing and those functions worked fine.

6.      The volume meter for that track shows no output/input for the SFX when that clip is played, while just above it in another track, the volume meter is working fine.

7.      There are no fade-ins/outs on the problem clip.

8.      There are no volume envelopes on the track containing the problem clip.

9. I have tried moving the problematic audio clip to different audio tracks at the same time setting and it will not playback.

10.      But…if I open up a completely new Vegas 20 program and put this same SFX clip onto an audio track, it works fine.

Since eralier version of this same program have worked just fine, I have not tried reducing the number of video tracks used in this program.

I have read in Google that there have been problems with .wav files in Vegas 20. What can you suggest I try next?