Feature Request - Dummy / Ghost songs or wishlist

Hi,I have a feature idea, I don't know if this exist in other software.

As a DJ I would like to listen to music everyday (Streaming, radio, in a bar...) and be able to add a song that I would like to add to my library (via a share to mixo feature ?, or a form ? a recording sample ?) . The song would then appear in mixo as a "fake" song only providing general info on it and/or a link to the source. At some other time, I would have the possibly to replace the "fake" track with a bought file.

Thanks,