Not sure what you are aiming at exactly, but I’ll make an assumption:
- you play your guitar into your audio interface, feed it into Cantabile, and use a virtual amp plugin (S-Gear, TH-U, Guitar Rig, …) to shape your guitar sound
- tweaking the guitar sound is a bit tedious, switching back and forth between having your hands on your guitar to play and using keys and mouse to tweak - correct?
- the idea is to capture your guitar playing and feeding it (looped) into the amp, so you have your hands free for tweaking.
In this case, the way forward is to use Cantabile’s recording functions to capture your guitar input (Cantabile can capture the clean guitar input “at the source” before it gets to the amp plugin). Make sure that only your guitar input is selected in the “ports to record” list. Once you’ve recorded your playing, you feed that file into a media player - and route that media player’s output to the guitar amp plugin.
To feed the file into the media player, you simply right-click it in the “recordings” list and select “add to media player x’s playlist”.
In the timeline view, you can then select “Loop on (infinite)”, then start your media player and tweak away!
Looks like this: