yea I am currently using SoLoud in Exipelago. I actually do all the fading between sfx etc on my own anyway, so I am not missing a lot here. I mainly want the ability to use several mixers/bus and load audio without the ContentManager … of course, if I would work with external sound designers, FMOD would be the way to go providing a much more complex “audiorama”.
SoLoud works without big hassle, seems to be easy on performance. Will find out at a later point how it scales with more sfx - I especially like the licencing stance of the author, which is clear, to the point and without questionmarks.