At the time I implemented and was offering it to be merged into DDA both builds were still compatible and it was basically a matter of pressing a button to get it into DDA. But for some strange reason they ignored it and now it would be much harder, but still it could be done in one afternoon if you are familiar with the code.
Just to clarify - we included a single small piece of his code once and he chewed us out for it and insisted he remove it, and it would never have been as simple as a single button click since he refuses to learn how to use the code management tools the project runs on (git, github). Everyone else's code is often just a button click to merge - not so Driverboy's here.Since then he's mostly been trolling the forums spamming advertisements for a mod he's said he's not even interested in working on anymore. :shrug:
We are planning on including music in mainline in the next couple months though - We've got an nice collection by Disarray that's looking good. People have mostly been dealing with other, higher priority issues though.