You may want to try Sound Show It is a soundboard software that was designed for improv shows. Source: over 1 year ago

If you go the laptop road, you could use Sound Show. It is a free soundboard software I developped for windows, linux and macos. Source: over 1 year ago

Sound Show may be what you are looking for https://impronivers.itch.io/sound-show. Source: over 1 year ago

You could do it with Voicemeter also from vb-audio : https://vb-audio.com/Voicemeeter/index.htm Here is a tutorial : https://gamingph.com/2018/02/how-to-output-audio-to-multiple-playback-devices-in-windows-10/ If you want to try another sound board software there is Sound Show : https://impronivers.itch.io/sound-show. Source: almost 2 years ago

I am not a huge fan of background music for my games. I prefer to have ambient sound effects to conjure the mood. Here are some audio atmospheres I made using ambient-mixer.com. Source: over 1 year ago

I use ambient-mixer.com for soundscapes, my streamdeck set up with a soundboard for one-off FX (i'm sure there are desktop soundboards you could use without one), and my own playlists for music. syrinscape definitely seems steep to me. Source: over 1 year ago

I love ambient-mixer.com for this. I'll put on library sounds, or the Gryffindor common room (the Hufflepuff one is great too). There are sooooooo many options, and you can make your own, or edit one you've found (which then saves to your profile). Sometimes I do a zen garden, sometimes the Millennium Falcon, and on Sunday afternoons, I do the Quidditch World Cup. You can customize about everything. Careful,... Source: over 2 years ago

Also if you haven't come across ambient-mixer.com yet, I highly recommend it. There are a bunch of different audio environments, and a lot of them are fantasy-based. You can also edit them to adjust to exactly what you want, or create your own. My favorite thing to do is pick one that suits the scene I'm writing, and play it at the same time as my familiar music playlist to help set the mental scene. Source: over 2 years ago

It only does ambiences, not soundboard-type effects, but a great free alternative is ambient-mixer.com, they have tons of stock sounds to choose from or you can upload your own sounds, and you can mix up to 8 channels with volume and pan control, continuous looping or staggered timing per minute, 10 mins, or hour. You can also save and share your ambiences or listen to tons of others created by other users. Source: over 2 years ago