Go here: http://www.chess.com/analysis-board-editor, select 'Paste FEN', and paste one of the lines. For example the first one translates to this.
Chess Position Text File
The point is that I want to open then entire file, load a position, and play that position against the engine.
I know that I can copy and paste into my program, but that's an extra step. In a normal chessbase or pgn file, I can click "next game" and it will load that position for me to play.
Try this guy

That text file full of positions is called an epd file. (It needs to have an .epd file extension.) I don't know about Chessbase products, but Arena and Scid vs. PC can open epd files. Maybe other interfaces can also do it, idk.
Did you try EPD2diag V1.5P5?
Create an empty text file and call it test.epd (not txt).
Paste your FENs into this epd.
Open the test.epd with EPD2diag V1.5P
http://www.rebel.nl/epd2diag.htm#E2P_DOWN
Click in the menu file -> export -> pgn
Good luck :-)
I've asked this before but I never got the answer I wanted.
Is there a way to get Fritz or Chessbase or some other program to open a text file full of positions that looks like this...
6R1/p6Q/1n5p/5p1k/3b2p1/5PPK/2q4P/8 w - - 0 41
3r4/1p1rpR2/3p3k/3P3p/2P4P/PK6/8/6R1 w - - 0 38
6r1/5R2/p1pkp3/1p5p/2pPP2P/2P2K2/P1P3P1/8 w - - 0 34
r1bqk2r/pppp1ppp/2n5/4p3/2B1n3/P1P2N2/1PP2PPP/R1BQK2R w KQkq - 0 7
k7/5P2/8/6B1/6K1/6P1/1R6/8 w - - 0 79
5r2/1p5k/3p3P/p1pN4/4PP2/5PR1/6QK/q7 w - - 0 48
1R6/3k2r1/8/5p1p/5B1P/3P4/2P2K2/8 w - - 0 55
r3k2r/pp1nbppp/4p3/1P1pPn2/P2B4/1qPQ1N2/4KPPP/RN5R w kq - 0 16
r3k2r/pp1nbppp/4p3/1P1pPn2/P2B4/2PQ1N2/1q1NKPPP/R6R w kq - 0 19
2r5/2r2p1k/1pN1pB2/1PbpP3/6p1/2PK1R2/6RP/8 w - - 0 42
The only success I've had is when it looks like this...
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "4k3/7p/2n1pQpN/p2p2B1/Pn5P/1P4P1/5P1K/8 w - - 0 1"]
*
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "3Q4/5p2/P1N1k3/1P6/4B2p/6p1/q3bbPP/7K w - - 0 1"]
*
Any ideas? The former would make it much easier/faster to save my positions in the file where I want them.
dp