File list (Check if you may need any files):
project\project.qpf
.......\project.qsf
.......\notetabs.vhd
.......\tonetaba.vhd
.......\key_board.vhd
.......\project.map.summary
.......\project.done
.......\project.dpf
.......\speakera.vhd.bak
.......\speakera.vhd
.......\divclk.vhd.bak
.......\divclk.vhd
.......\project.vhd.bak
.......\project.vhd
.......\songer.vhd.bak
.......\songer.vhd
.......\project.map.rpt
.......\project.flow.rpt
.......\db\lpm_divide_8eo.tdf
.......\..\abs_divider_4dg.tdf
.......\..\alt_u_div_2ue.tdf
.......\..\add_sub_3dc.tdf
.......\..\add_sub_4dc.tdf
.......\..\add_sub_kec.tdf
.......\..\add_sub_lec.tdf
.......\..\add_sub_mec.tdf
.......\..\add_sub_nec.tdf
.......\..\add_sub_oec.tdf
.......\..\add_sub_pec.tdf
.......\..\add_sub_qec.tdf
.......\..\add_sub_rec.tdf
.......\..\add_sub_sec.tdf
.......\..\add_sub_tec.tdf
.......\..\add_sub_5dc.tdf
.......\..\add_sub_uec.tdf
.......\..\add_sub_vec.tdf
.......\..\add_sub_0fc.tdf
.......\..\add_sub_1fc.tdf
.......\..\add_sub_2fc.tdf
.......\..\add_sub_3fc.tdf
.......\..\add_sub_4fc.tdf
.......\..\add_sub_5fc.tdf
.......\..\add_sub_6fc.tdf
.......\..\add_sub_7fc.tdf
.......\..\add_sub_6dc.tdf
.......\..\add_sub_8fc.tdf
.......\..\add_sub_9fc.tdf
.......\..\add_sub_7dc.tdf
.......\..\add_sub_8dc.tdf
.......\..\add_sub_9dc.tdf
.......\..\add_sub_adc.tdf
.......\..\add_sub_bdc.tdf
.......\..\add_sub_jec.tdf
.......\..\lpm_abs_ek9.tdf
.......\..\add_sub_e6f.tdf
.......\..\lpm_divide_lko.tdf
.......\..\abs_divider_kbg.tdf
.......\..\alt_u_div_2re.tdf
.......\..\lpm_abs_ui9.tdf
.......\..\add_sub_u4f.tdf
.......\..\prev_cmp_project.map.qmsg
.......\..\prev_cmp_project.qmsg
.......\..\project.db_info
.......\..\project.sld_design_entry.sci
.......\..\project.eco.cdb
.......\talkback\project.map.talkback.xml
.......\........\project.quartus_map.tb2.xml
.......\project.qws
.......\db
.......\talkback
project