I'm confused. Did he make the decision to use the CDs or did he ask you for your opinion on using CDs?
1. If you are the MOM, why is the pastor making decisions on his own about how to conduct praise & worship? He's not staying in his lane, and therefore, he's going to cause a collision. (Of course, this is coming from one of those people who DOES NOT believe whatever the pastor says is right because he's the pastor so you should just shut up and do what he says do...).
2. There's nothing wrong with singing along with CDs. I know a lot of churches that do that. It's regional and denominational, so it may seem weird to you because you're not exposed enough to it. There's a pretty large church in Atlanta (about 3,000 members) that uses CDs, and they have an excellent music department. I guess they just like CDs. Personally, I don't get it, but that's just me.
3. If the Praise Team has their backs to the congregation to read words, they should be sitting along with the congregation, not standing in front of them.
4. There's a whole lot wrong with this whole situation, and I really could go on and on. If I were you, I'd start off by having a meeting with the pastor to clearly articulate YOUR vision for the music department, and see if you have his support. It would help if you had something in writing to share with him, in addition to an explanation for why you oppose the use of CDs and how you plan to address his perceived flaws with the PT.
5. Why can't the musician come every Sunday, and do you have someone to fill in in her absence?
My bottom line: It sounds to me like the pastor sees a problem, doesn't think you're taking the appropriate steps to resolve the problem, so he steps in to help. He probably means well. If you solve the problem, he won't have to step in. What are you going to do to address his perceived concerns about the PT?