I'd be glad to help, but at best, I can remix themes with MIDI-based sounds, and the best MIDI-based sounds I have are the default MIDI-based sounds that Windows Vista comes with. And even then, I'd much rather have sheet music on the piece before I even try at it.
If I had a good recording device, I'd record a piano or acoustic guitar piece. Sadly, the best I have is a camera, which lacks in the audio department, but is beautiful for video.
Unless there's some sort of visual art I could do for the CD, I can't say I can get any high-quality involvement. Sorry. :<