ocenaudio
A cross-platform audio editor for simple recording, trimming, editing, and preparing music files.
REAPER
A digital audio workstation for recording, editing, mixing, and preparing audio tracks.
Adobe Audition
Professional audio editing software for recording, cleaning up, mixing, and preparing sound files.
GarageBand
Apple audio software for music editing, track prep, recording, and creative audio work.
Audacity
A free audio editor that can help studios trim recital tracks, adjust audio, and prepare performance music.