baker

Hi guys, i'm having an issue with ESX 24. I can build a sample instrument no problem and change the sample when I first do this. However i'm having an issue when I come back to the sample instrument later and try to change the length of the sample it won't let me. This is not the first time this has happened either and i don't know why! i've noticed under 'Project' files that the mp3 is not there, i've tried adding it but as soon as i open the Sample Editor, it disappears. All the audio tracks that i'm using for other sample instruments are still there. I've google searched this issue a bunch of times too but haven't found any answers. I feel like it's probably something fairly simple that i'm doing/not doing but for the life of me I don't know what! any help would be greatly appreciated. Thanks!