I’m using Audacity 1.3.12 on my Macbook running 10.6.8. I’m considering updating my OS to 10.11. Will my current version of Audacity (1.3.12) work (I’m very happy with this version) or will I have to upgrade to 2.1.2 ?
Thanks for any answers, Paul
Why are you upgrading? Are you gaining a significant advantage?
You will in all probability not recognize either Audacity or the machine when you upgrade. Going for that big a jump includes a learning curve and enough time to get lost and ask for help. There’s almost zero chance you will just pick up where you left off.
Not a MacBook Pro? Some of the earlier, modest powered machines will not upgrade to 10.11. This is where you are intended to get a new machine.
Koz
Koz, Thanks for the reply.
I’m considering upgrading because my Macbook (yes, Pro) is getting sluggish & quirky. I realize that there’ll be a learning curve if I upgrade. All I want too know is: Will my current Audacity (1.3.12) still work on the upgrade?
Before upgrading to El Capitan, see the official hardware requirements for it here: https://support.apple.com/kb/SP728?locale=en_GB.
Probably after some fashion - 1.3.11 launches for me on El Capitan.
But we won’t give you any help with that obsolete 1.3.12 version here. Please see the pink panel at the top of this page.
Gale
Macbook (yes, Pro) is getting sluggish & quirky.
Have you done any first level maintenance? There are normal things you can try to make sure your machine is running as well as it can.
Do you always get the chong when you start? That’s the self-testing success tone. If you hold the Option key while you start, do you get the choice of two different ways to start?
Do you use Chrome?
I have a new MacBook Air coming. My existing MBP is perfect in every way but one. I’m doing more field work now and it weighs as much as a lorry/truck. It’s “portable,” quotes intentional. It’s recognized as a lethal weapon by the State of California.
“Don’t bug me man, I got an MBP!”
“Oh. Sorry sir. I hope I didn’t bother you.”
I plan to migrate my applications with the idea I can go back if Something Really Unfortunate happens.
Koz
My new MBP with non-rotating SSD disk (for Audacity testing) weighs in at less than the first “mobile” phone I had back in the late 80s 
Peter
The SSD is just the way to go. Last four machines (3-1/2, the Air isn’t here yet) have all had SSD. I took a considerable hit in storage on the first one (128GB), but it was blistering fast, stable, cool and made no noise.
That’s my silly story of the IT guy at work who had a sister to my machine, except he had spinning metal. I needed to do something on his and I thought it was broken. Slogging through molasses/treacle.
The last two MBPs had optical drives and high quality analog stereo in and out—and optical if I wanted it. That’s a lot of the weight right there. The newer Macs are expected to do everything in “the cloud.” No interfaces, no connections. They’re light, but they’re pets. Terminals, really.
Koz
Indeed this one’s only 256GB - but that’s more than sufficient for the Audacity testing work I need to do with it (and plenty of room for an iTunes library)- and yes it is certainly cool compared to my spinning disk PC sitting next to it
You see Larry Ellison was right all along when he predicted (and indeed Oracle made for a brief while) a return to dumb(ish) terminals (ultra-thin clients) all those years ago …
And btw "there is no ‘cloud’, it’s just other people’s computers … " 
Peter