Yes I often play games while having a movie on my second screen or having a podcast playing and I am just wondering if there is someway to lower the sound and music volume in Star Trek 25th Anniversay. I can't find any controls or options for this in the various setup and config files. In game all you can do is turn the sound and music off and that is not what I want to do. Any help on this would appreciated.

A little late perhaps, but anyway:

Open the file dosbox_st25_single.conf with a text editor (e.g. Notepad). In the [autoexec] section, add a new line under the c: line.
Enter the following command there:
mixer master 30

or any other value lower than 100.

Cheers!