There's a Hijack ir_translate fix for the Seek buttons, something like this in the player's config.ini file:

[ir_translate]
Left.LT=0x00b9460A.LN,Left.LU ; fix front-panel Left button in Tuner mode
Right.LT=0x00b9460B.LN,Right.LU ; fix front-panel Right button in Tuner mode