I tried three different methods in order to concatenate songs
- Audacity: Works, but it adds a "click" sound between the first and second song
- cat command: I tried
cat *.wma > result.wmaand
cat second.wma >> first.wma. Both have the same problem, the resulting file is just the first one.
ffmpeg -i "concat:uno.wma|dos.wma" -acodec copy result.wma, same problem as cat command, the file result.wma is a copy of uno.wma