Wavepad helps to seamlessly merge audios together. You can merge any number of audios together using this software. It has a bridge and white noise reduction tool as well. Review collected by and hosted on G2.com.

It is a little tricky to use. Beginners will need a little help from either a professional or take help of videos on YouTube. The software takes a bit of time to process the soundtrack. Review collected by and hosted on G2.com.