Remember audio connections

[Jean-Francois Arseneau]

Description by stuartl:

When a new project is created and instruments are added, set up the audio connections in the same way they were set up in the previous project, rather than defaulting to having no connection. This way they'll be right some of the time, and they'll be right *all* the time for people with a single-output soundcard.

[Laszlo Pandy (laszlok)]

For people with one input, it is selected by default already. As for multiple inputs, this would probably be to difficult to determine which connections to use.