diff --git a/doc/README.md b/doc/README.md
index 6ab542d..e895de2 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -104,7 +104,7 @@ Parameters:
  - `gain`: Gain, 0..12, default 0
  - `noClip`: Soft Clip (assumed boolean), 0..1, default 0
 
-## `delay seed gain feedback_pc tap_count first_delay delay_range delay_scale delay_rand_pc gain_scale wet`
+## `delay seed gain`
 
 Parameters:
  - `seed`: Random seed, 0..1000, default 0
@@ -118,25 +118,10 @@ Parameters:
  - `gain_scale`: Amplitude change, 0.2..5, default 1
  - `wet`: Dry/wet mix, 0..1, default 1
 
-## TODO `vinyl split index year warp click wear`
-
-VyNil effect from SWH.
-
-Parameters:
- - `year`: Year (int), 1900..1990, default 1990
- - `rpm`: RPM (int), 33..78, default 33
- - `warp`: Surface Warping, 0..1, default 0
- - `click`: Crackle, 0..1, default 0
- - `wear`: Wear, 0..1, default 0
-
 ## TODO `echo split index delay`
 
 Run an echo filter on the given loaded file.
 
-## TODO `noise split index seed`
-
-Inject white noise on the image.
-
 ## `quicksave`
 
 Save the file on the same directory of the file specified by `load`, but
diff --git a/examples/vinyl.scri b/examples/vinyl.scri
deleted file mode 100644
index 940d089..0000000
--- a/examples/vinyl.scri
+++ /dev/null
@@ -1,3 +0,0 @@
-load :0;
-vinyl 3 1 1990 33 0 0 0;
-quicksave;
diff --git a/src/image.zig b/src/image.zig
index 6fd37db..47991b3 100644
--- a/src/image.zig
+++ b/src/image.zig
@@ -212,12 +212,12 @@ pub const Image = struct {
 
         var ports = try lv2.setupPorts(&ctx);
 
-        if (ctx.n_audio_in > 2) {
-            std.debug.warn("plugin <{}> accepts more than two channels.\n", plugin_uri);
+        if (ctx.n_audio_in != 1) {
+            std.debug.warn("plugin <{}> does not accept mono input.\n", plugin_uri);
             return ImageError.InvalidPlugin;
         }
 
-        // TODO check n_audio_out > 2
+        // TODO check n_audio_out
 
         // now, for each param for the plugin, we find its port, and set
         // the value for the port there.
diff --git a/src/lang.zig b/src/lang.zig
index bacb55a..fc5f1d6 100644
--- a/src/lang.zig
+++ b/src/lang.zig
@@ -24,7 +24,6 @@ pub const CommandType = enum {
     Reverb,
     Highpass,
     Delay,
-    Vinyl,
 };
 
 pub const Command = struct {
@@ -140,7 +139,6 @@ pub const Lang = struct {
         _ = try self.keywords.put("reverb", .Reverb);
         _ = try self.keywords.put("highpass", .Highpass);
         _ = try self.keywords.put("delay", .Delay);
-        _ = try self.keywords.put("vinyl", .Vinyl);
     }
 
     pub fn parse(self: *Lang, data: []const u8) !CommandList {
diff --git a/src/plugin.zig b/src/plugin.zig
index abc22f5..79094f6 100644
--- a/src/plugin.zig
+++ b/src/plugin.zig
@@ -72,14 +72,8 @@ pub const RunContext = struct {
             return ImageError.InstantiateFail;
         }
 
-        // we allocate []f32 with size 2 to account for stereo plugins, however
-        // we only use &in_buf[0] and &out_buf[0], and don't use the
-        // (supposedly) right side of neither input or output.
-        var in_buf = try allocator.alloc(f32, 2);
-        std.mem.secureZero(f32, in_buf);
-
         return RunContext{
-            .in_buf = in_buf,
+            .in_buf = try allocator.alloc(f32, 1),
             .out_buf = try allocator.alloc(f32, 2),
             .instance = instance.?,
         };
diff --git a/src/runner.zig b/src/runner.zig
index 0ebc0eb..a8042ca 100644
--- a/src/runner.zig
+++ b/src/runner.zig
@@ -235,11 +235,6 @@ pub const Runner = struct {
         try image.runPlugin("http://plugin.org.uk/swh-plugins/delayorama", pos, params);
     }
 
-    fn vinylCmd(self: *Runner, pos: Position, params: ParamList) !void {
-        var image = try self.getImage();
-        try image.runPlugin("http://plugin.org.uk/swh-plugins/vynil", pos, params);
-    }
-
     fn runCommand(self: *Runner, cmd: *lang.Command) !void {
         var params = ParamList.init(self.allocator);
         defer params.deinit();
@@ -355,18 +350,6 @@ pub const Runner = struct {
                 try self.delayCmd(pos, params);
             },
 
-            .Vinyl => blk: {
-                const pos = try cmd.consumePosition();
-
-                try cmd.appendParam(&params, "year");
-                try cmd.appendParam(&params, "rpm");
-                try cmd.appendParam(&params, "warp");
-                try cmd.appendParam(&params, "click");
-                try cmd.appendParam(&params, "wear");
-
-                try self.vinylCmd(pos, params);
-            },
-
             else => blk: {
                 std.debug.warn("Unsupported command: {}\n", cmd.command);
                 break :blk RunError.UnknownCommand;