Audio "selects" a track that is of the
same type as itself.
eg mono, stereo or 5.1
A mono track can not go onto a stereo audio track in Premiere timeline for example.
You can create and delete audio tracks ( layers) to suit your self.
PrPro locates Audio by channel-count, i.e. 1-channel will only go onto a 1-channel Audio Track, 2-channel onto a 2-channel Track, etc., and will even create one w/ matching channel-count, if it does not exist, just as Craig points out.
This ARTICLE will give you more details.
Good luck, and hope that helps,
Ah yes that makes sense, I noticed the little speaker/(s). Also created a new mono track to better suit my needs. Thanks guys!
You are most welcome.
If you have need for some "standard" Audio Tracks, you can set those up in your Default Sequence settings. For those, PrPro always places 1-channel Tracks first, below the Audio/Video centerline, then 2-channel, then 6-channel, then Sub-Mix Tracks, and finally the Master (to the specs. chosen).
I have my Default Sequence set to 2 2-channel, 4 2-channel and a 5.1 Master, as I seldom am working with 6-channel Source Files.
Also, one can Add Tracks, and can position them almost anywhere, except for below the Master.
If one is lacking the proper Track, with the necessary channel-count, if the Source Clip is dragged to the Master, a proper Track will be created, though that will be down the stack.
You are now working beyond those comments, but others might benefit, should they have the same question and find this thread later on.