Ya - ID3, àwọn àkọ́lé Vorbis àti àtòmù MP4 tí a fi pamọ́ sípapọ̀ nípa àwọn àwòrán tí a fi pamọ́, láti jẹ́ pé àwọn fáìlì tí a tí ìṣàmúlò-ètò náà lóòlù nínú àwọn àkọ́lé.
No. Change Audio Speed is free without an account, and nothing is added to the audio. The upload and the result are deleted automatically about 24 hours after the job, which leaves time to download the result.