Before you ask, Turbo CD and PC Engine CD games are the same; just different region. Anyway... Wouldn't it be nice to have a CD-based game take up much less space? Lucky for you, it's possible, as Mednafen supports ISO/OGG games. You will need a Turbo CD or PC Engine CD game. If it's in BIN/CUE format, proceed to Step 1. If not, proceed to Step 4 (though I really suggest starting with Step 1, BIN/CUE rips are the purest). Step 1 Download TurboRip v1.00. This will convert BIN/CUE rips into ISO/WAV ones. Windows only, unfortunately. Not sure if it runs in WINE. Step 2 Mount your disc image (make sure to select the CUE file!) using the virtual drive software of your choice. I recommend either Alcohol 120% or Daemon Tools. To "mount" a disc image is to basically pretend that it's a physical disc that's been inserted. If you have a real CD on you, you can insert that into your disc drive now in lieu of mounting a disc image. Step 3 Open TurboRip and type in the number that corresponds to your drive, virtual or not. Sit back and wait. Or go on to Step 4 and be productive. Don't worry if you see more than one ISO file, Turbo CD games typically have more than one. Step 4 Download WinFF. Despite the name, it's available for Linux as well (and it's open source!). WinFF is a powerful, yet simple tool that lets you convert media files from one format to another. (It brags about being for videos, but it works for audio too.) If you'd prefer another tool, you can use that, but this is what I use. Step 5 Once TurboRip is done ripping the files from your BIN/CUE rip, go to WinFF and select all of the WAV files. Under Windows (dunno about Linux), you can save time by simply clicking and dragging your cursor across all the WAV files until they're all highlighted. Do NOT pick the ISOs or CUE file! Now select the following settings; Convert to: Audio Device Preset: OGG Output Folder: Anywhere you'd like Sample Rate: 44100 Hz Audio Channels: 2 (that's stereo) Audio bitrate: 64kb Anything not listed can be left blank. Click "Convert" when you're ready, and then wait! The window that appears isn't going to disappear on its own, you'll have to close it when it stops. Step 6 You can remove all the .WAV files. Just make sure all the ISO files are in the same directory. Open up the .CUE file in your favorite text editor. Change all instances of ".wav" to ".OGG", and all instances of "WAVE" to "OGG". Most text editors have mass replace features, making this much less tedious. When you're done, save it, move all the files to a specific folder, and you're done!