Trying out some exe-compressors, here are results of two of these babies on flashfxp.exe_v22build968
Original byte-size 2.316.666 bytes.
UPX1.90w (executed with upxshell309build2511) resulted in 1.155.962 bytes
PECompact184 with it's jcalg1-compression resulted in 719.360 bytes
Compressed or not, no difference in performance (but not really tested). Aspack-compressor on ffxp got as far as an error-message.
To have a look
http://upx.sourceforge.net/ free4all
http://www.collakesoftware.com/#PECompact shareware
-white clouds forever
but the eyes that saw you stayed
hidden in the snow-