[FIXED] Mute/Solo sets FM OP vol to 0

[Barney Rubble]

FM pattern playing on Track 7 

Modular track pattern playing Track 1

Solo Mod track 1 then unsolo Mod track 1 Track 7 FM op  volume is reset to zero.

Same happens if FM track is soloed or muted.

Some of these bugs have great creative potential Thomas ;-)

[XORadmin]

Creativity is what it's about ;-)

Tested and confirmed. I mute by setting the volume to zero, but i don't reset.
Actually this is a easy one to fix. THX