Can't remove aMSN.

When i put aMSN in the trash and try to empty it, it can't because it says that libtls1.50.dylib is in use. I tried to find it with Spotlight and Quicksliver and they couldn't find it.

Try using the Activity Monitor...

Applications Folder>>>Utilities Folder>>>> Activity Monitor.

Look for aMSN (if not maybe the specific file you mentioned)... then force Quit.

Then Empty Trash.

If that doesn't work... Restart your Mac, then Empty the trash.