Mainly depends on your stereo is to support what format of music, because from your literal meaning, I guess you should be able to use the kind of playback of square dance integrated speakers, in layman's terms, is to put the song on a memory card, and then the memory card is inserted into the speakers can be played, this mode of speakers can not decipher this mode of general multi-format music files, so you are in the selection of playback files, look at the first time! Music file format, music file format generally have MP3, WAV, APE, WMA, CD, MOD, RA, FLAC and so on, but generally this kind of all-in-one speakers support MP3, so you can check, you downloaded the music file is not MP3 format? (That is, the file's suffix is not .MP3, for example: Phoenix Legend .mp3)
If not, two choices, 1
Redownload the MP3 format file, 2, use the Format Factory to convert the format
.