[Pete]

Have coded up a little application that mutes RR while PC Nav7 is speaking, files attached in the ZIP.

Please note that this is a hack to Nav7 and involves a change to the Nav7 executable. Use at your own risk (and back up the Nav7 exe first :)).

Only tested it with RR and Nav7 but it should work with FI and it may work with other satnav apps. Will test with Nav8 as soon as I get a copy.