decompression lsi 4 to be compressed the compressed music data is stored into the hdd 11 via the hdc 8 as a file the compressed music data may be not only data inputted from cd but digital audio data which is directly inputted into the voice compression decompression lsi 4 also the compressed data may be audio data converted into digital data from analog audio signal by an integrated a d converter assembled in the voice input output device 5 an audio data file stored in the hdd 11 as described above is read out by a command from the cpu 1 to be supplied to the voice compression decompression lsi 4 for decompression processing the data decompressed here is converted into analog signals by a d a converter assembled in the voice input output device 5 to be supplied to an amplifier and a speaker which are not shown furthermore an input operation from the operation key 6 can control a selection of a piece of music to be reproduced or a sequence of reproduction entry data of key operation and status data of reproduction of pieces of music stored in the hdd 11 which piece of music is reproduced which portion is reproduced whether or not whole piece is reproduced etc can be written into the flash memory 2 to be stored the data may be stored in the hdd 11 also status data for music piece reproduction is maintained for each piece of music and as described later this status data for music piece reproduction is used as a u201c favorite degree u201d which shows user 39 s preference on this piece of music the present invention provides means for storing.