1) I think many 1Ls manage to find work outside of Texas for the summer (and your options are even better summer after 2L). It depends on what you're looking for, your first semester grades, the economy, etc. Internship salaries run from nothing to $3,000 a week. If you have one of the later and if you work nine to twelve weeks, you could save a significant amount of money and put it towards your education.
2) I don't know if there are many students interested in entertainment law, although we have a whole journal devoted to it that you could probably get involved with as a 1L (http://www.utexas.edu/law/journals/tresl/
). Texas is a big school so chances are we have something that will meet your interests.