best way to break in phono cable

Movin' up the analog food chain, I've purchased a new silver-based phono cable for my new rig. I suspect that the 0.5mV that I'll be pumping through it (at the MOST) will require a millenia or so to fully break it in. I would think that adapters could be found to use the cable for a time in a line-level application. Any ideas? Thanks!