File sharing does help independent artists. How does it not? I wouldn't make any fight against people who upload my content to file sharing sites. It's futile. The content is or will be there whether you like it or not - so I would embrace this. File sharing is one hell of a marketing tool for artists to leverage and as an artist, the goal is to play live, is it not?
Artists make much, much more money on shows and merch than CDs ever will be able to provide. I would not rely on CDs as a primary source of income, I would rely on playing live. To me, an album in either physical/digital format is merely a promotional tool for my brand as a band, similar to merchandise or music videos. All in the name of promotion.
Secondly, I would make it as easy as possible for someone to buy said album. I'd sell my album for $7-14 dollars with artwork, and .pdf file containing information and details on how the album came to be and other things my fans would be interested in. On top of that, I would be flexible with that price, with sales on some day of the month, etc, where if you buy the album, you also get a shirt if you pay X amount more.
All these file sharing sites has opened me up to many, many new artists, and as a peer, I am now a fan, and I may have not bought their CD, but you can be assured that I would definitely go out of my way to go to a concert of theirs when they pass through my area. Without file sharing, again, I may not have bought their CD, but otherwise I wouldn't be a fan because I would not have heard their music in the first place!
I advocate people sharing my content, because it's that many more people who know about me and my musical endeavors. And the people who actually do visit my website and pay for the album? That's just the topping on the cake - the primary way of making money is by touring, not by CD sales!