It's come to my attention that it's not immediately clear what it is you DO in Tunescape. Along with posting a page on the website, I've been putting together a demo Tunescape to go out with the first update.
A big part of the enjoyment of Tunescape is kicking back and just enjoying the experience. There's not much to see yet, since nobody's had a chance to create! As more Tunescapes are made available to download from users who wish to share, viewing will become a much larger part of the application.
BUY button unavailable
Although the release state of Tunescape has been changed to 'Released', the option to buy is not showing up on the store page. This has been relayed to Steam support, and we're eagerly awaiting a response in order to fix the issue. Apologies for the delay, we'll have it available just as soon as is possible.