Hi, thanks for the feedback. This used to be a feature back in the very early days of OST Composing Jam, but it has a bug that if you select an operating system (because itch.io is designed for games, not soundtracks) it will only show submissions that are tagged with that OS, and because soundtracks do not run in Windows, Mac, or Linux, none of the submissions will show up. It is also not possible to change your OS after selecting, so it was quickly removed. I have tried contacting the admin of itch.io about it, but they said it would not be worth implementing the feature as only our jam would use it and it costs resources for them to implement something new. But, because OST Composing Jam have grown so much over the past years, I can try asking them again. Hope this answers your question. ^^