Like Matt Finley said, High quality mp3's are probably fine.
To me, 128kbps are not good enough for performing.
You can hear the difference.

Personally I use .wav files because disk storage is hardly an issue these days.
Mp3's are compressed files. Compression is lost data.

It probably doesn't matter at 320Kbps. But perhaps sometimes it does.


biab2023(Mac)
Logic Pro X