Extending beyond 999 bars - making an hour long audio file

Hello everyone! A techy question. I am using MPC3 on my Dell laptop.

How can I extend beyond the 999 bars? I am making an audio file that is around an hour long. I think I remember I used to be able to Insert Blank Bars via the Edit function, but when I click on it, it doesn't seem to work. I need to send the file as one hour long file, not in segments. Any help would be greatly appreciated! Thank you, Natalie x

If it's music and it has a tempo, say 110bpm, set the tempo to 55bpm maybe? alter TC etc.
Use song mode to concatenate?

Thank you so much for your reply. That is helpful. I change the tempo to 60 and it still doesn't seem to increase the length.

Thanks,

Natalie x