Programs like Audacity (for example) only seem to use one core when converting an audio file into another format. I know this because the CPU Meter gadget maxes out at 50% (which indicates one core is fully utilised). That leaves the other core wasted whereas some other conversion apps utilise both cores and I get quicker results. Is there any way to get software to use both cores somehow to speed up performance on single core apps? Or is it all up to the developers? I have a Core 2 Duo running Windows 7 if that's relavent.