You don't mention what games or what you have tried. Did you configure your game? If it is a CD game, did you mount your CD?

The games are Decent and The Elder Scrolls: Arena.
There are no disks for them, so after installing to the C:\ I mount C to C:
What I have tried is just about everything I could think of, the sound in the games is turned up.
I have set Sound Blaster to SB16, SBPro1 and SBPro2 in the Configuration for DOSBox, and tried running with GUS=True and GUS=False. I also tried running with MPU-401, with IO=330, IRQ=2, and DMA=1. I used every option in the games configuration for sound, SB16, SBPro, GUS, etc...
I set Mixer Master to 100:100, 1000:1000, 10000:10000, and eve 100000:100000, to no avail. I also tried setting Mixer SB to 1000:1000 and still nothing.

There are no disks for them, so after installing to the C:\ I mount C to C:

Install it WITHIN dosbox and choose a mounting like "mount c d:\oldstuff"
for both the installation (additionally mount the install folder as d drive for
dosbox) as well as the gameplay.

Also make sure to set up the sound card in the sound configuration program in each game. Look for programas called INSTALL, SETUP or SOUNDSET in the games folder.

Install it WITHIN dosbox

I tried just finished trying this with Arena, unfortunately when I do it tells me that it must be installed under Win32. I'm assuming its using an MSI file to install the game thats not compatible with DOS or DOSBox...even though its a DOS game it has probably been modified by Bethesda to install under Windows. 😢

you can unzip or unrar it

you can unzip or unrar it

It's an executable.

you can unzip or unrar it

To clarify: it's a self extracting executable. That means it's a ZIP or RAR archive (in this case, the latter, iirc) file with a built-in decoder program. Most programs such as WinZip/WinRar/PowerArchiver etc. know how to handle these and can unpack the executable just like a regular archive.

2nd clarification: When someone like Qbix with + 5900 posts writes that you can unrar/unzip it, you F...ING don't post a message like "It's an executable" without trying out QBix instructions first.

Be nice, Minimax. We may know Qbix to be a reliable source of information, but new posters won't. Post count isn't necessarily an indication of post quality 😜

Post count isn't necessarily an indication of post quality

BAH

I suppose I should have been a bit more specific than "It's an executable".
I extracted the install file, it gave me the executable install file that requires Win32 and wont install through DOSBox.
Sorry for any confusion. 😅

That executable install file (Arena106.exe, assuming you have the same version I do, which was the freeware release by Bethesday) is the one that you should unpack. You can also just run it in Windows, as it basically just does the same thing. By default, it creates a folder C:\ARENA. Move that into the folder you use to mount your DOSBox C drive.

For instance, if you use C:\OLDSTUFF for as your DOSBox C drive, move the ARENA folder into that, so it ends up being C:\OLDSTUFF\ARENA. Then, when you start DOSBox, "mount C C:\OLDSTUFF". Change to the newly mounted C drive by typing "C:", then go into the "ARENA" folder by typing "CD ARENA". From there, you can run "INSTALL.EXE" to configure the game (use configure only, not the "install game" option) and then run "ARENA.BAT" to start the game. On subsequent runs, you can skip the install.exe step.