NY00123 wrote:To summarize: You should make sure that not only DOSBox takes advantage of SDL_sound, but that the given build of SDL_sound expects SDL 2.0, rather than 1.2 (unless the given DOSBox build depends on SDL 1.2 as usual).
A bit of a background about the SDL_sound point:
You see, when you want some networking features, you can pair SDL with SDL_net, or SDL2 with SDL2_net. The same applies to other SDL satellite libraries like SDL_mixer.
SDL_sound is different though. For one, I don't think it's even an official SDL satellite library, given that it's hosted on icculus.org, rather than libsdl.org. It doesn't change the fact that Ryan C. Gordon i.e., icculus, has a very major part in the development of SDL itself (along with related libraries).
On the technical side, the last revision of SDL_sound can be built to depend on either SDL 1.2 or SDL 2.0. Problem is, it's very easy to make an SDL 2.0 app use a build of SDL_sound that depends on SDL 1.2, and vice-versa. Chances are, you won't even notice any problem for quite long (which has occurred to me). Only once you try to use SDL_sound for real (say for loading an OGG file), problems may arise. It can be a silent failure, a clear error with a message, a crash or anything else.
From what I can observe, at least the builds of SDL_sound for Ubuntu 14.04 target SDL 1.2. Thus, even if you think you successfully built an (unofficial) SDL2 build of DOSBox with full cuesheet support, there's really no guarantee this is going to work. It simply depends on the way SDL_sound was built.
This has an obvious solution: add SDL_sound to the DosBox source tree.