I agree that if anything is selected the Print File List tool should only print the selected items -- and it should also bring up the OS's Print dialog so we can select our printer (and modify settings) instead of just using the default. This annoys me constantly when I want to print out track listings and other things...
However, there is an easy way to do this if you have Excel. Select the file or files that you want to print the listing for. Control-C (or right-click --> Edit --> Copy). Open Excel to a blank worksheet. Control-V (or right click --> Paste). File --> Print.