[DirectX 7 Programmer's Reference] Low-Level DLS (100%)

Microsoft DirectX 7.0 > DirectMusic > DirectMusic Essentials > Using Downloadable Sounds

[DirectX October 2006 Documentation] Low-Level DLS (55.5555555555555%)

DirectMusic > Advanced Topics in DirectMusic

[DirectX 8.1 C/C++ Programmer's Reference] Low-Level DLS (46.8206885026738%)

DirectX 8.1 (C++) > DirectX Audio > Advanced Topics in DirectX Audio