Your link doesn't work but I know which one you mean.
Please make sure you post your LW questions in the Limewire Forum sections. You posted in Bearshare which is a different program. This is not the LW forums, this is the gnutella forums & caters for many gnutella programs.

You can use the iTunes > menu bar, File>Add (Control+O), & select all items within the folder to add using the SHIFT key (ie: select one song, hold down shift key & select all the others or the last one on the list & all will be selected.) That's a quick way of doing it. iTunes will not normally add a song twice if all details of the id3 tag are identical.

The share iTunes allows you to share with others on your LAN/WAN set up. Not outside of this. It will also put a playlist into iTunes called name-limewire or similar.

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