Warning: Do not add files from My Network Places to your SA library: These files will show up on client searches/browses but will NOT be downloadable in any shape or form. The d/l status for any such files will permanently alternate between searching and queued on the client side. The fix is to map whatever network share you want to add to the SA library and then add the mapped drive. This is a confounding issue which IMHO requires some attention.
Tested with SA 2.5.2.0 32-bit on Windows XP Pro SP3