As Helium 13 supports General Plugins, it would be great to get a recording interface for the line-in of the soundcard. For me, I would use this for digitizing my vinyl records to Helium.
I hope a lot of Helium Users would like to have this feature also.
This is currently nothing we plan to implement as an "Imploded software" plugin, but possibly somebody else has the same needs which can use our plug-in API to create such a plug-in.
I would recommend Audacity to create the recordings, and then just import into Helium.