On Hidden Palace there are several CD-i game ROMs available to download, it is an easy way to download a ROM, use a program like Imgburn to burn it on a CDR disc and play it on your CD-i hardware. What if burning doesn't work and you get the error "unsupported track format CDI/2352"?
CD-i member Retrostuff has the solution: "Open cue file with a text editor, change CDI/2352 to MODE2/2352, save, burn.ImgBurn is foolproof to operate. Just double-click on a cue file and burn. (Make sure that the file association CUE is set in ImgBurn Options/Registry.)"
CD-i member Seventy7 confirms this is a helpful tip: "I use Img Burn for burning to CD-R. Open the .cue file in a text editor and replace "CDI" with "MODE2" and it should work fine to burn"
[Thanks, Retrostuff, Seventy7]