Well personally I use iTunes as a player and excellent filing system and method of feeding my iPod. It is easy to select a download location for your Limewire files so that they are available for the player of your choice, and whilst this is very easy for Mac users with iTunes, I do agree it could be made clearer and easier for other users, judging by the number of queries on the subject!
I heard recently of a file sharing client, I forget which, which had an integrated browser (which was a bit limited) also the searching ability was a bit limited. What use is that? Better surely to have a top p2p client and a top browser (Firefox or Opera perhaps). Just my opinion
+ which Limewire are still imho struggling to make a player that has half decent sound.