Audacity
If you want to do some editing of audio files, download the free application Audacity. Audacity has a range of sophisticated options. You can easily export clips of audio files, record new files, and add tracks to existing files. A good example of Audacity's editing abilities is the Noise Reduction tool in the Effects menu. It allows you remove background noise from a recording, such as tape of a conversation made outdoors.
You first need to identify a portion of the recording which only contains the background noise you want to remove.
![](https://static.wixstatic.com/media/af7fa4_d4c91752176646078d4b310741c41d99~mv1.png/v1/fill/w_49,h_21,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/af7fa4_d4c91752176646078d4b310741c41d99~mv1.png)
Select that area, and then go to Effects . . . Noise Reduction. A dialog box will open. Click where it says "Get Noise Profile".
![](https://static.wixstatic.com/media/af7fa4_36dce76c613a471fbf08d59d67be7276~mv1.png/v1/fill/w_122,h_103,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/af7fa4_36dce76c613a471fbf08d59d67be7276~mv1.png)
Now select the full range that you want the background noise removed from and go back to Effects . . . Noise Reduction. Accept the default setting and click OK. You should see a noticeable reduction in the background noise.