How can I get a track ID from a track URL using the SoundCloud API?
You didn't specify a language in your question, so I'm just going to provide a high-level answer.
Use the resolve endpoint. I'm using this URL as an example:
https://soundcloud.com/msmrsounds/ms-mr-hurricane-chvrches-remix
HTTP GET: https://api.soundcloud.com/resolve.json?url=https%3A%2F%2Fsoundcloud.com%2Fmsmrsounds%2Fms-mr-hurricane-chvrches-remix&client_id=[your_client_id]
The resulting JSON:
{
"status": "302 - Found",
"location": "https://api.soundcloud.com/tracks/147986343.json?client_id=[YOUR client_id]"
}
That numerical value is the track_id. You can just stop here or hit that endpoint you just got back for more information:
{
"kind": "track",
"id": 90787841,
"created_at": "2013/05/05 00:15:40 +0000",
"user_id": 7853935,
"duration": 188333,
"commentable": true,
"state": "finished",
"original_content_size": 35031144,
"last_modified": "2014/09/30 05:53:10 +0000",
"sharing": "public",
"tag_list": "MSMR CHVRCHES \"Secondhand Rapture\" Remix Hurricane",
"permalink": "ms-mr-hurricane-chvrches-remix",
"streamable": true,
"embeddable_by": "all",
"downloadable": true,
"purchase_url": null,
"label_id": null,
"purchase_title": null,
"genre": "",
"title": "MS MR - Hurricane (CHVRCHES remix)",
"description": "MS MR - Hurricane (CHVRCHES remix)\r\n\r\n\r\n",
"label_name": "",
"release": "",
"track_type": "",
"key_signature": "",
"isrc": "",
"video_url": null,
"bpm": null,
"release_year": null,
"release_month": null,
"release_day": null,
"original_format": "wav",
"license": "all-rights-reserved",
"uri": "https://api.soundcloud.com/tracks/90787841",
"user": {
"id": 7853935,
"kind": "user",
"permalink": "msmrsounds",
"username": "MSMR",
"last_modified": "2014/08/04 09:03:56 +0000",
"uri": "https://api.soundcloud.com/users/7853935",
"permalink_url": "http://soundcloud.com/msmrsounds",
"avatar_url": "https://i1.sndcdn.com/avatars-000037198343-2lptmy-large.jpg?86347b7"
},
"permalink_url": "http://soundcloud.com/msmrsounds/ms-mr-hurricane-chvrches-remix",
"artwork_url": null,
"waveform_url": "https://w1.sndcdn.com/56LCadzDEBZn_m.png",
"stream_url": "https://api.soundcloud.com/tracks/90787841/stream",
"download_url": "https://api.soundcloud.com/tracks/90787841/download",
"playback_count": 1672227,
"download_count": 18494,
"favoritings_count": 20426,
"comment_count": 464,
"attachments_uri": "https://api.soundcloud.com/tracks/90787841/attachments",
"policy": "ALLOW"
}