How do I configure sound cards?

A 2.1 version of the format was introduced in 1998 with an E-mu sound card product called the Audio Production Studio. The 2.1 format added features allowing sound designers to configure the way MIDI controllers influence synthesizer parameters. The 2.1 format is bi-directional compatible with the 2.0 format, which means that synthesizers capable of rendering 2.1 format will also by definition render 2.0 format, and synthesizers that are only capable of rendering 2.0 format will also read and render 2.1 format, but just not apply the new features.