Here's an easy to use app that converts all you opus file to mp3.

Conversions are carried out in the background with a notification on the notification bar indicating conversion progress.

You can manipulate -

* Bit-rate
* Sampling rate
* Channels

Available options include -

Audio Bitrate :-
320 kbps
256 kbps
192 kbps
160 kbps
128 kbps
96 kbps
64 kbps
32 kbps
16 kbps
12 kbps
8 kbps
6 kbps

Audio Sampling Rate :
48000 Hz
44100 Hz
32000 Hz
24000 Hz
22050 Hz
16000 Hz
11025 Hz
8000 Hz

Audio Channels :
Mono
Stereo


Thanks for using our app.