There are many factors that might cause you to have playback issues, so we'll start with some common ones:
- Internet / network problems: If you could clear your browser cache and possibly reboot your wifi configuration that sometimes helps.
- Browser plugins: There are certain plugins that prevent Mixcloud from playing content. Check your browser settings for anything that might affect that.
- The original file: The audio content might have been corrupted when it was originally uploaded. If you tried the first two options, and the content is still not playing, this might be case.
It is worth noting that many users find they can solve this issue by trying out a different browser which occasionally is the route of the issue. Also make sure that your browser/Flash Player is up-to-date.