What this looks like to me is you need more time with your video editors. ALL the titles I've used from Premiere, Sony Vegas, Final Cut Pro allow me to drop a sound track in from some MP3 or other sound file.
As to capture I wonder why it matters. I don't really care how I capture but can put my sound track on the video in post production.
Or is that not what you want to do?
I've just bought a Canon MD235 camcorder. I want to create videos for internet use, and I want to create them regularly. I am more concerned with sound quality than picture quality.
I have tried a number of programs - eg Windows Move Maker, PowerDirector, and Adobe Premiere - the last two on a thirty day trial - and I'm running up against the same problem.
I want the option to capture the audio separately - via an Edirol UA-25 external sound card. So as I make the video, the video will be coming from the MD235, the audio from the UA-25 soundcard. However the programs I've tried haven't given me the option to choose audio from a different source - I seem to be forced to use the camcorder's microphone. This option is available, for example, if I do the video on a webcam rather than the camcorder. Even on a webcam which has a built-in microphone.
So, I don't know what to do. I emailed the company doing one of the programs, about finding this option, and they said that it depended on the device.
Is it something intrinsic to my camcorder, or am I not using the software properly? Or is there a software package I should be using that I haven't tried yet?
Thanks for your help.