Your survey has a number of flaws that makes it hard to fill out.
First of all, your "education level" breakdown is flawed. You should change "professional degree" to "higher then masters" or "terminal degree." A PhD is higher then a masters, but is not considered a professional degree. Also, some people consider things like a certification in medical administration to be professional degrees, despite being equivalent to the bachelors or associates level. Basically, the term professional degree doesn't really mean what you think it does.
You left off the box for "other" under least favorite.
You should be more specific about how you wish to measure amount. If I listen to 5 albums over 3 hours, and then later listen to the radio for 10 minutes while driving to work, I could tell you that I listened to music for 3 hours and 10 minutes that day, or I could tell you that I listened to 5 albums, or I could say that I listened twice. I suggest amount of time as the most consistent metric.
Some of us still listen to music using CDs and record players. I probably have a few hundred songs on a computer hard-drive somewhere. I also own somewhere on the order of 500 albums. The first number implies that I don't own a lot of music, when I actually own a fair amount.
Your last question is going to produce biased results. First of all, the law is not the same everywhere, but more importantly, whether or not its true, if you label acquiring music via free-download or file sharing as "illegal" people are going to be less likely to respond that they do it often. While some people certainly don't care, others are less likely to respond positively if you actually list it as a crime even on anonymous survey.
For example, if an anonymous survey asks "how often do you smoke marijuana?" and a different survey asks "how often do you use illegal drugs?" you're likely to find that somehow more people smoke marijuana then use illegal drugs, even though smoking marijuana is using an illegal drug in almost all cases. This is because people see the word illegal and are automatically conditioned to deny wrongdoing.
