Copy recorded music on Apple Mac and listen to it using iTunes

AIFF-C is the format and is not compatible with mp3, mp4 players. It is an apple format for music.

The design of this mp3, mp4 player is very well crafted and every minute thing is given utter importance while making it. Other than clicking pictures and listening to music this mp3 mp4 player also supports TXT format for storing eBooks. The FM radio frequency of this mp3 mp4 player ranges from 87.5 to 108 MHz. The FM radio is a great tool to catch up on the latest music apart from those stored in the playe. Everyone will ask i have a smart can do almost mp3 mp4 do, what need them? But when you are want to read a ebook, it is inconvenient. Specially by plane.

MP3 players are used to listen to music, similar to the old portable "Walkman" products of the 1980's. You can load your MP3 format music onto the player through a cable connected between the player and the computer. You can get this music by downloading it from various places on the internet for a price (such as Amazon.com, itunes, etc.) You can also copy music from your music CD collection onto your computer, and then from the computer to your MP3 player.

Some digital media players have the ability to play complete videos! These are called MP4 files. Some of these devices are also able to listen to the radio, or record your speaking voice like a hand-held recorder.

Sometimes it is necessary to convert your music if it is not in the MP3 format (for example: .wav file {wave file}). There are free programs available to do that for you, such as Format Factory which is a completely free download.

i'm not sure that you really can unless you copy your music into itunes

I think it is MP4 or AVI.
so you need an excellent converter to help you with this.
Video Download Studio can help you with this.
it can convert your video to any kind of format,
including AVI, MPEG, MP4, 3GP, WMV, MP3, FLV, MOV, WAV
why not get a free trial from http://www.downloadvideos-convert.com/download-videos-music
hope it can help you more or less!

convert the music files to mp4 if its an ipod use itunes

The recording from radio that did not want to work in iTunes was made in WAV format. To solve the problem I went to settings and changed recording format to MP3. When I recorded in MP3 format from the radio with my JNC SSFM2 series MP4 player and copied it into iTunes on my computer, iTunes played it without a problem.

Apparently WAV format is used on PC and MP3 is used on Apple Mac.

I have only bought my player today so can´t say that this will resolve your issue for certain:-
You could try reinstalling the firmware on the player. My player came with a cd and some tools for firmware upgrade, inc a copy of the firmware.