Virtual DJ decompressing file error

Hello,
I started using Virtual DJ for my music. On my system I have installed Windows Vista 32bit.
When I want to open file I got an error message. This problem I don’t have no idea how to solve.
Can someone help me to fix this?
For all files I keep back up on external HDD.
Thank you
Cherryl

VirtualDJ
Decompressing this file in memory would require 44Mb of contiguous memory.
Your system has only a total of 147Mb available free segments (out of the 2047Mb), and they are too fragmented to hold a contiguous buffer.
Therefore, the song will be loaded on-the-fly from the drive (and the full waveform preview will not be available).
OK
