.ps and .pdf filesize

[Michael Murphy]

Hi,

I'm new to LP, but I'm running version 2.10.7 under Cygwin on a Windows XP
machine. I obtained the build through the cygwin setup.exe from a mirrors 
server.

I have a file that outputs as five pages of music with a piano staff and lyrics.
However, the filesize comes out in .ps at 1MB and in .pdf at ~900kB. I am
wondering if there is a satisfactory way to reduce this filesize. I noticed
there are no command-line arguments that accomplish this. Should I install a TeX
system, get DVI output and then dvips -> ps2pdf it myself? Or would I achieve
better results using the Windows version available from the website?