There are now two versions of the DLL included: Original and Simplified.
This has the same parameter map as the original Delphi version (Now C++). it should be completely compatible across projects using the Delphi version (1.05 BETA). There is also a bug fix which resolves audio that could get stuck in the channel buffer when switching channel during playback (creating a buzzing noise). It opens up one new possibility - you can now automate the channel parameter to stream audio to different sends.
This version only has two parameters. Mode (Send/Return), and Amount (% signal to send). You should take the simplified version DLL and rename it something like send1.dll. You can make copies of the DLL for each additional send/return you'd like to have available. For example: send1, send2, send3, send4. Each DLL can then only communicate to an identically named DLL. This eliminates the need to use the channels in the original version. It also gives you a nice visual cue.