MP3 Converter OS X is an extremely good program to convert mp3 files to WMA, WAV, aac, OGG, AIFF,AMR, even the video format such as flv, mpeg, mov and so on.
This program is worth downloading and buying. Some good things about the programme will bring you much surprise.
Don't bother any more that you can't help your friends with the conversion. Apart from that, you also can do changes as you like. Now, follow next steps to experience the converter.

STEP 1. Run the software and click the "Add Files" button to add what would like to convert.You will see the added files clearly in the screen.
STEP 2. Go to the "Profile" folder list, many kinds of formats will be shown and select what you need. The next line you can locate a folder for your converted files. Find it in the folder next time.
STEP 3. Just click conversion button
. The whole progress will be finished in a few seconds. So you can enjoy it. Wait until is completed.
If you want to add two or more pieces of mp3 files, just click "Merge" to join the files together. They will be played in order. It is space-saving. The MP3 Converter OS X is specially designed for users to do any changes they want. It is optional!