Propellerhead Record Import .wav Error In Propellerhead Reason Can You Import Mp3's And Record Over Them With MIDI?

In Propellerhead Reason can you import mp3's and record over them with MIDI? - propellerhead record import .wav error

You can import audio tracks in Reason --
I do not know what you mean saved via MIDI, but you can add the sequence (MIDI) Software Instrument tracks in reason.