It doesn't sound bad with the violin there, but I think I know what you mean. Might sound odd, but a distant muted trumpet was the first thing that sprang to my mind as a possible replacement. That said, I think it's more a case of the notes being played rather than the sound itself. I also think many wouldn't notice anything if you hadn't pointed it out, but I know that I am the same with these things - when they bug you, they bug you and it won't go away.
Either way, it's still good. I wouldn't know where to start with stuff like this. Thanks for the add on Soundcloud btw - I will return the compliment when I go on it next, but truth be told I only really use it as a host for this place, so if you ever put anything up there it may be a while before I get to it.