Hi all
I added a on/off button to my PreenFM (see attached). Its a standard one from Maplin; I might change it for the same model but the illuminated version.
Its a bit tight to add as you need to drill a 15mm hole and its very close to the Midi In.
http://www.maplin.co.uk/p/red-locking-push-switch-n98aqta,
Paul