Use APKPure App
Get Easy MP3 Joiner (Multiple) old version APK for Android
Dołącz i Fuzja plików MP3 lub audio wraz prosty sposób.
This application give you full support for Join Audio files too fast.
Merge or Join two Mp3 files together.
How to use?
1.Select MP3 or Audio files
2. Enter Output file name
3. Join together
4. Play or Share with friends
Note: This app still with beta version so please try with small files.