Question How To Get Detailed Yahoo Aerial Imagery in JOSM

I have been working with the JOSM plugin building_tools (http://wiki.openstreetmap.org/wiki/JOSM/Plugins/BuildingsTools). I only discovered it a few days but it is making my building-tracing tasks faster by a factor of 5 to 10. What a great tool! I am noticing, however, that the resolution of Yahoo imagery using Potlatch 1.4 is much better than the Yahoo imagery available in JOSM. I'm wondering how I can get better resolution Yahoo imagery in JOSM to match what is available in Potlatch 1.4. This