This is a mp3 player with 10 channel equalizer. There is an option saving the EQ settings. Only mp3 files can play. There is an option open mp3 files via selection window or drag and drop to the music list. The output can be monitored on the VU meter, if you select the audio source.
If missing the NAudio package than write this line your visual studio Package Manager Console: Install-Package NAudio
If missing the taglib than add project reference the taglib-sharp.dll.