Thanks for the feedback everyone!
Chrome reporting the file as a virus is annoying, but there isn't much I can do about that except tell you that Chrome is just being overzealous and assure you that the file contains nothing malicious. I've seen similar comments on other entries.
Sadly it seems the game does not do a good job of explaining what to do. I've written some hopefully helpful tips in the description that might clear things up.
In essence, the bulk of the game consists of two minigames, one where you are supposed to listen to a "melody" and then match it by alternating between holding/releasing the left mouse button for the appropriate amount of time and pressing the right mouse button when you have replicated the entire melody (remembering not to release the left mouse button before this if the melody ends on a rising pitch). After pressing the right mouse button, three sets of bars will appear, the purple bars represent the actual melody, the green bars represent your attempt, and the red bars represent the difference (i.e. errors) for each part of the melody (thus, in each set there should be an equal number of bars as there were rising/descending parts of the melody). The goal is to get a small enough total error.
The second minigame has to do with connecting symbols with entities. This part can be very confusing. I wrote some tips about this in the description. Short(ish) version: if none of the entities seem to fit the symbol (i.e. if the symbol does not seem to match any of the keywords mentioned under "Associated with:"), the safest bet is to choose the disconnect option. This will give you a point or two (see the numbers in the lower right corner while serving customers). An incorrect guess will result in losing a point. After your points reach certain levels you unlock identification options. The first unlock occurs when you have 3 or more points.