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Hi All, I have just worked me about 3/4 through my WK 7500 manual, as I wanted to compose my first songs. Well, pretty bad written manual , but okay, this keyboard has so many features, it is hard to write a good manual... Anyway the most disappointing insight I just made is, that I can not use the WK 7500 as a real audio workstation. I can NOT record multiple audio samples via the microphone and layer them together via the sequenzer... I thought that would be possible to do something like a vocal choir song, singing all the voices myself and layering them via the sequencer together... (if I am not wrong with that... ???) The audio part of the WK-7500 lets you just only record the Sequencer output to the SD Card and then INSERT the Live Voice Microphone... So you can only perform the live audio via the microphone via the final recording to SD card... But if you want to record your voice not only in one LIVE step, but want to record parts of it and let it being controlled by the sequencer, no that seems not to be possible ! Damn ! Or is there any trick where I can record several audio sample from the Mike input and then use them in the pattern editor or sequencer tracks somehow ? It seems the audio part is just only there for the final one time recording together as the Insert when the sequencer output is recorded to "tape" ( sd-card). So if you sing wrongly or have a bad timing in a few beats or measures, you have to record all the whole song again and can not edit that out and you only can sing one voice and don´t use audio multitrack recording ! If there is any trick to circumvent this, please let me know... Many thanks. P.S: Before I bought the WK-7500 I watched this video: and there he seems to have just only sampled the whole PRINCE song ( at around minute 2:15) only to play this ONE complete song sample from the SD-Card and he seems to play Live to it with some improvisation to it, but you can only playback from the SD-Card and play live with it with the keyboard, but you are not able to re-record this to the sequencer ! I first thought he had sampled there some loop parts of the songs and just had been playing back all the samples via the sequencer, but this seems not to be the case... So all you can do is playback WAV files from the SD Card and play along live with the keyboard... but not record this via the sequncer again...only play along... What a disappointment... So you can NOT multitrack-record any audio stuff , just only use the internal sounds from the build in hardware sounds inside the sequencer.... 2. What is also not good is, that you still need to convert the recorded WAV files via the Tone Editor on a PC or MAC to a real correct format WAV File. The WAV file it records on the WK7500 keyboard is some kind of bad WAV format and it only has 42.9 Khz sampling frequency and is very low volume, so you need to use this Casio Editor program to get a real 44.1 Khz standard 16 bit Stereo WAV File with the right volume... I wonder then, why it is not possible to also convert it to 48 Khz, as this is needed for DVD audio production sampling frequencies... Also I wonder, why the keyboard itsself does not work internally with the right sampling frequencies of 44.1 or 48 Khz already... Conversion always produces small amounts of Aliasing.. On my Windows XP Machine the Edtor version 6.1 did not work at all when trying to install it... Only on my other WIndows 7 64 bit machine it did work... Why does it need at all to convert these samples first at the PC ? Why didn´t they build it standard PC compatible sampling frequencies and sound file formats ? 3. What about firmware updates ? Are these not possible with this keyboard ? I have been reading about this foot pedal Midi release bug, and this seems still not be fixed ? Can´t this be fixed, cause the WK 7500 is not able to do firmware updates via USB or the SD-card ? 4. How do I get into the service menu, so I can see, what firmware version I have ? 5. The Mike input is humming a lot. There is a noise gating function build in, so you don´t hear it when you don´t sing, but when you sing softly you can hear the humming noise in the background, which is pretty annoying...not good ! Please let me know your comments. Maybe there is still a trick to do audio multitracking somehow ?? Many thanks. P.S: What about the WK7600 ? Does it have the same problems or did they fix some of these problems in it ? Does anybody know ? Many thanks.