there are several question like this on the forum site - the problem is easy to solve!

Get your head round it - many of these files that you download are indeed LimeWire files, so your mac takes you back to the application that created the file, clever right. Usual this is what you want the computer to do.

However you need to drop "white space" iconed LimeWire files directly onto Stuffit Expander or other similar tool, you will then get a stuffit icon file, which you can then double click to open in the time honoured way.

andy145