Mp3tag - is a powerful and easy-to-use tool to edit metadata of audio files.

foobar2000 - is an advanced freeware audio player for the Windows platform.

AIMP - is a freeware audio player for Windows.

Exact Audio Copy - is a so called audio grabber for audio CDs using standard CD and DVD-ROM drives.

xrecode II - is converter and audio-grabber.

Soulseek - is an ad-free, spyware free, just plain free file sharing network for Windows, Mac and Linux.