Support for MP3, WAV, and AIFF; noise reduction; and dozens of built-in effects.

It features a real-time preview of effects. If you’re cutting audio and want to add a quick fade, you can hear it before you apply it.

Split by time, split by silence, and support for ID3 tags. 3. WavePad Audio Editor

Large file support (it won't hang your Windows 7 system on 1GB+ files) and a powerful spectrogram view. Quick Comparison Table

Volume adjustment (fade in/out) and a tiny installation footprint that won't slow down older PCs. 5. Ocenaudio

Ocenaudio is a hidden gem. It’s a cross-platform audio editor that prioritizes ease of use and a clean visual experience.

While the newest versions of Audacity target Windows 10/11, Audacity version 2.4.2 is widely considered the most stable "final" version for Windows 7 users. 2. Mp3splt (The Lossless Specialist)