file that is able to be downloaded, or saved, to a visitor's local machine.
Generally, downloads are specified as such by the site owner, and given either
freely or charged on a per-download basis. By default, SmarterStats considers
the following extensions to be downloads: .ASF, .AVI, .DOC, .EXE, .GZIP, .MP2,
.MP3, .MPEG, .MPG, .MSI, .MSP, .QT, .QTM, .RA, .RAR, .SWF, .TAR.BZ, .TAR.BZ2,
.TAR.GZ, .WMA, .WMF, .WPD, .ZIP. Your administrator may set up additional extensions