The system allow Play MPE player users to download tracks in zip package(include album art, csv and xml for metadata and the audio file - mp3 or wav). Aside from zip package, you can download tracks individually as mp3 or wav.
Zip package
To download tracks in zip format, just click the download icon in:
Release Summary Page:

Release Information Page:
Wav or mp3
To download tracks individually in wav or mp3 format, just hover your mouse pointer on the track list and click the download icon on the right side,
Release Summary Page:
Release Information Page: