Comment by rpastuszak

Ha, I remember how proud I was when I discovered a "hack" to increase the max recording duration (from 30s to X minutes[⋆]):

1. record silence

2. copy paste the recording till you achieve the desired length

3. start recording from the beginning

On AudioMass and its performance/snappiness: this feels much more smooth than Audacity on my MBP, so I'll give it a shot soon.

⋆ or: whatever the memory limitations of your PC were