We use a Macintosh computer for music sharing. The application we have come to rely on is called Acquisition. It's a great, user-friendly music sharing program exclusive to the Macintosh platform. It allows you to download and upload concurrently, and provides helpful ratings to ensure that you are sharing with a reliable peer.
Acquisition is highly compatible with ITunes. We have been able to organize and play hours of music for parties by collaborating between Acquisition and ITunes. The combined technology of these two programs is incredible and so easy to use, that even our kids have learned how to search and locate music of their choice.
If we are trying to locate a particularly elusive music file, we also have come to depend on a bit torrent client called Azureus. Azureus is more than a music sharing program however, you can share all sorts of files. However, while Azureus can often allow us to access more obscure titles, Acquisition is still our first choice as a music sharing program due to its ease of use, quicker upload and download times and minimal steps required to acquire music files.
One of the best things about Acquisition is that it can be used free of charge got an extended period of time. You do have to tolerate occasional pesky nag messages, however, this does little to interfere with the overall process, and is a small annoyance when you consider how great a program Acquisition really is.
The other great thing is that almost all files have been pre-verified. That means that most times you will be able to acquire the actual title you have selected. Nasty surprises are very rare. Also, the benefit of working on a Macintosh computer is that the chances of getting an infected file are much lower, since most viruses are created to attack PC computers. Since macs aren't as mainstream, they aren't as plagued with viruses. Just another benefit that we've found with use.
In the past, we have tried a few other music sharing programs including Napster, Limewire and Kazaa, however since switching our file sharing usage to our Macintosh we have come to rely on Acquisition, as well as, Azureus from time to time. We've found that in order to maximize our download times and access to files, the best thing to do is to enable or allow file sharing amongst peers. Of course, this is not an absolute requirement, but you may be viewed as a 'freeloader' if you only take from other users, but never allow sharing of your files with others.
Another thing to keep in mind, depending on where you live, is that sharing of music files is a grey area. Meaning that there is a lot of controversy over where to draw the line when it comes to copyright infringements. If you want to err on the side of caution, your best bet is to only download music files that you actually own the rights to - in other words, you need to own the album. The only purpose this serves is to give you an MP3 version of a song, rather than only a CD version. Whether this holds value to you or not, is up to you to decide.
(from ArticlesOfNote.com)