Trainman2, Have you given a try to communicate with ERR ? Send an email to Ken, with ERR, and he will reply back in a short time, usually the next day. Any questions you have are best directed to Ken, as I have had to do sometime. I do know that have electronics to do the same, the other way around. They have a very reasonable command unit you utilize to operate TAS sound boards. As stated, email Ken and ask him about TAS interface with ERR Railsounds Commander. They do make a stand alone RS board that may be the way for you to pursue.
Jesse TCA 12-68275