Silver83: It is not the config file, which is making a difference, but the DosBox version. I use Taewoongs DosBox, which is far superior to DosBox 0.74 in many ways.
How did you "improve" your sound problems? I'm pretty sure we can get rid of them completely...
When I use that doesbox version, the sound still stutters a bit and the movies play exactly the same as when I run dosbox through d-fend. I changed some dosbox settings through dfend (core, audio, priority) and one of those or a combination of those fixed the audio. Only stutters occasionally (very few) when the game needs to load from the disc again. I am not sure I am experiencing the same movie issue. I takes a few seconds to load the video it seems. Looks like i miss the first second or something because of it. When I click on my brother the second the: it tries to play a movie but it's probably so short that it gets cut completely. First time works even if it looks like I miss a second (i see the cowboy shoot the indian). Again this issue is present with my setup and with yours so this might be different issue.
Unrelated: I am a total newb with dosbox and discs so somebody said i should use d-fend: I can work with that now, I installed harvester with it but will I run into issues when i have to change a disc???