This is very simple! Just put them in the same folder on your harddisk and name the audio tracks Track*.mp3. The ISO image's name does not matter. For example if you want to play Zool from ISO and MP3s, rip the tracks to a folder on your hard drive, e.g. e:\Zool and then rename all audio tracks to Track2.mp3 (audio track 2), Track3.mp3 (audio track 3), ..., Track10.mp3 (audio track 10)...etc. and Akiko will automatically recognize and play them. The only thing you've to think of, is to put the audio tracks into the same folder as your ISO image.