# FAQ > Short answers to the questions people ask most. Source: https://docs.wavdrop.link/faq ## Does my client need an account? No. They open the link in a browser and press play. Notes only ask for a name. ## Does it work on phones? Yes. Share links work in any modern browser, on phones, tablets and computers. ## Do you compress my audio? No. WAVDROP keeps your file exactly as you uploaded it, and downloads give your client that same file. ## Which file types can I upload? WAV, AIFF, FLAC, MP3, M4A, MP4, AAC, and ZIP for stems or extras. See [Uploading files](https://docs.wavdrop.link/uploading). ## Can my client download the files? Only if you let them. Turn on **Prevent downloads** to keep a project stream-only. See [Downloads](https://docs.wavdrop.link/downloads). ## Can I share just one song? Yes. Open the song's menu and choose **Copy song link**. See [Share links](https://docs.wavdrop.link/share-links). ## I sent a link to the wrong person. Can I take it back? Yes. Open **Secure** and choose **Share again**. The old link stops working immediately. See [Share links](https://docs.wavdrop.link/share-links). ## Who can read the notes? You, and anyone who opens the link. Everyone on a link sees the same notes, so it works like a shared conversation about the music. ## What happens when I upload a new mix? Stack it as a new version of the song. It becomes the main version, so the link your client already has plays it. See [Versions](https://docs.wavdrop.link/versions). ## Is WAVDROP free? There's a free plan with enough room to try it on real work, and paid plans for more storage and link protection. See [Plans and storage](https://docs.wavdrop.link/plans). ## Do you use my music to train AI? No. WAVDROP doesn't use your audio to train AI and doesn't send it to AI services. The optional [AI connection](https://docs.wavdrop.link/ai-connection) reads your projects and notes when you ask it to, never your audio files. ## How do I delete my account? **Settings › Session & account › Delete account**. See [Settings and account deletion](https://docs.wavdrop.link/settings). ## How do I contact you? From the [Support](https://wavdrop.link/support) page.