We have recently discovered an issue with version 2.0 where Mac OSX users are unable to import MP3s via file location or via Web URL.
The file appears to load as the icon background changes colour and the file-name is present however there is no sound.
Apologies if you currently have this problem. We are investigating the issue and working on the solution.
This issue only seems to effect the Soundtrack import on Macs and the function is fine on a PC. You will still be able to import MP3s via the voiceover option so voiceovers will still work and you can still use the Sparkol soundtrack library.
If you're experiencing this issue and need further support with it, please raise a ticket.