If it's not CPU related then I guess there's one of two things left:
Flakey or not enough memory, and VirtualDJ is running out of cache
Physical hard disk issue(s)
For the latter, doesn't look like you've got firewire on that machine but maybe you could connect an eSata drive and try putting the MP3s on an external drive?
If it's not CPU related then I guess there's one of two things left:
For the latter, doesn't look like you've got firewire on that machine but maybe you could connect an eSata drive and try putting the MP3s on an external drive?