Mixing between songs seems to work reliably now i havent managed to make it fail no matter how hard i tried which is good, but i did manage to find one more little thing which is not correct.
In playlists when you play a song and chose this same song to be the next song then you mix to it , it works fine but then when you choose the next song again after that you can not use mix, the only option is to let it play through to end or stop it and restart it, and then you can have another mix through if you want.
Its not a deal braker but its not the way it should be if you look at the logic of operation.
The track mutes are in red now which is a bit better but still not great i am more interested in what im going to hear through the PA than what is muted, i would rather see all tracks that are operational to be in full blue colour and all non operational tracks to be red this then pleases all parties with different logic.At the least i would expect the now playing tracks to be in blue surround not red as it makes no sense to have the red surround on an active track when red represents a mute.
I have noticed one of my tracks to have a continual crackle through it where it was perfectly clean before, and if you pause the playing track it has a spit sound at the end and begining of the restart like a dc offset signal pop.
Other tracks seem fine, i will keep an eye on this.
Thanks Peter for prompt fix of xfade that was very important.
The EQ undo redo is PERFECT.