Patent ID: 7570770

Claim:
A mixing device comprising: an input device that inputs a plurality of first audio data; a built-in hard disk device that stores a plurality of second audio data; an external storage device that stores a plurality of third audio data; a plurality of operating members each being disposed to be depressed and having a sensor for detecting the depression; an assigning device that assigns at least one from among the plurality of second audio data stored in said built-in hard disk device and/or the plurality of third audio data stored in said external storage device, respectively, to at least one of said plurality of operating members; a memory; a control device that is responsive to said assigning device assigning the third audio data, respectively, to the at least one of said plurality of operating members, for causing said built-in hard disk device to temporarily store the assigned second audio data and causing said memory to store the assigned third audio data, said control device being further responsive to said assigning device assigning the second audio data, respectively, to the at least one of said plurality of operating members, for reading out the assigned second audio data from said built-in hard disk device and causing said memory to temporarily store the assigned second audio data without double storing the assigned second audio data in said built-in hard disk; and a reproducing device that reads out and reproduces the second or third audio data from said memory when the at least one of said plurality of operating members to which the second or third audio data is assigned is detected as being depressed.