So I'm using guitar rig to record some stuff, but........

It only records in wav format wich is way to big. I'm using the asio drive in the guitar rig because thats the only way that I can get a clear sound, and i can't convert it to nothing else....(because of the asio driver i guess...)

Any solution??

Use another program like Audacity or Cubase and open it as a VST plugin. Then you can export that as a mp3 or whatever you want.
You'll need to use a sequencer with vst support. Reaper is a good and cheap option.
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